Nintendo thumb

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Original Nintendo Entertainment System controller, which caused first cases of Nintendo thumb injury Nintendo-Entertainment-System-NES-Controller-FL.jpg
Original Nintendo Entertainment System controller, which caused first cases of Nintendo thumb injury

Nintendo thumb, also known as gamer's thumb [1] and similar names, is a form of repetitive strain injury (RSI) caused by excessive playing of video games with the traditional Nintendo controller. [2] This injury mainly occurs due to repeated thumb movements while playing video games. [3] The symptoms can include blistering, paraesthesia (a tingling or a burning feeling in the skin), [4] [5] as well as swelling of the thumbs, though any finger can be affected. This can lead to stress on tendons, nerves, and ligaments in the hands, and further onto lateral epicondylitis ("tennis elbow"), tendinitis (severe swelling of the tendon), [6] bursitis (inflammation of the fluid-filled sac around joints), [7] and carpal tunnel syndrome (compression of the median nerve at the wrist). [8] Similar injuries can occur with other gaming systems, such as PlayStation thumb from playing Sony PlayStation. [3] The general recommendation for the treatment is to rest and stop the repetitive motion of the affected finger (usually the thumb). In more severe and painful cases, using NSAIDs is also recommended. [2]

Contents

Other less localized injuries in the shoulder, knee, and Achilles tendon have also been noted to arise from playing the Nintendo Wii. [9] [10] [11] Some of the symptoms can be associated with the De Quervain syndrome (degeneration of tendons that control the movement of the thumb).

Background

Few case reports of symptoms including stiff and painful joints and limited range of motion in the wrist after frequent Atari 2600 use were published in the late 1970s and early 1980s. [12] [13] Nintendo thumb specifically was first highlighted after portable handheld Nintendo games consoles were released in 1989, [14] with reported cases of RSI appearing primarily in children. Later, the controllers for the Sony PlayStation and PlayStation 2 were noted as causing the condition.

The repetitive motion of the thumb or other fingers on Sony Playstation controllers can cause the same type of injury as Nintendo thumb. PSX-Original-Controller.jpg
The repetitive motion of the thumb or other fingers on Sony Playstation controllers can cause the same type of injury as Nintendo thumb.

In 1987, an 11-year-old boy reported to the Children's Hospital of Philadelphia complaining of his finger being contracted, flexed, and being unable to relax it back to its baseline position. After medical investigation it was determined that this same finger was being used to use the joystick of his video game remote (no mention of the brand) up to around 6 continuous hours on a daily basis. All other fingers that did not use the joystick did not witness this injury, and a general approach of anti-inflammatories and eliminating playing time was used to treat this individual. [15] [16]

The first occurrence of the Nintendo thumb condition was published on May 17, 1990 when a 35-year-old woman played a Nintendo video game for the first time. She played it for five hours with no interruptions. The next day, she experienced severe pain in the right thumb (specifically in the extensor tendon), which she had used to press a button on the video game console repeatedly. [17]

In January 1991, the condition was termed as "Nintendinitis" by James Casanova, MD, when he evaluated an 8-year-old boy with pain in his thumb. It was found that the pain occurred when the boy flexed his thumb while playing a Nintendo video game, and that he had no history of trauma or disease. [18]

A similar effect was seen in adults using alternative controllers such as the Nintendo Wii Remote Controller. [19] However, due to the shape, size, and extended use of game controllers, it can occur in users of any gamepad or joystick. Similar problems have also been observed with the use of mobile phones and text messaging in particular, called texter's thumb (see Blackberry thumb). [20]

Reports of nintendinitis resurfaced after the Nintendo 64 console came to market in 1997, which contained a joystick that caused similar injuries in the palm named "ulcerative nintendinitis". [2]

Treatment and prevention

It is known that movements that are both high in acceleration and in force can lead to injury if performed repeatedly, and this applies to both larger limbs such as legs and arms, as well as smaller ones such as wrist and fingers. [19] Evidence based guidelines for wise use of e-games by children suggest prevention of musculoskeletal injuries via minimization of usage of e-games that require movements that can lead to RSI while at the same time being mindful of the physical position the player is in while engaged in video games. [19] Additionally, preventative measures can include flexion and extension stretches in the wrist at warm-up and throughout gameplay. [21] These examples of preventative approaches become particularly important since evidence shows that increased video game playing time will increase the risk of developing these conditions. [22] In early 2000, Nintendo of America provided protective gloves for its users after receiving 90 case-reports regarding hand injuries. [23] Nintendo now also provides messages during gameplay to remind players to take a break. [2]

The pain and discomfort resulted from this injury is usually temporary, and the recommended treatment includes holding back on playing video games for several days. The few published case reports of Nintendo thumb did note that symptoms resolved upon stopping video game use. [2] Using nonsteroidal anti-inflammatory drugs like Ibuprofen to relieve the inflammation from the RSI is another treatment option. [2]

Case reports

Although overall video game consoles and remote controllers have moved towards a more ergonomic approach, Nintendo has faced an increase in injuries with their consoles caused by the Nintendo Wii. This is because of its novel style of play which involves more physical and interactive activity on behalf of the user. [24] After the release of this console in 2006, the first case report belongs to an Achilles heel injury presented by a 46-year-old man after playing performing a jogging motion requested by the game which led to the rupture of his Achilles tendon. [24]

Bursitis in elbow is a common Wii related injury Bursitis Elbow WC.JPG
Bursitis in elbow is a common Wii related injury
Ruptured Achilles tendon Achilles Tendon Rupture.jpg
Ruptured Achilles tendon

Although the interaction is virtual, the injuries are very real and resemble injuries seen in real-life sports ranging from head to toe. [25] A neck-related injury was first reported in 2009 when a 38-year-old man swung his remote control forcefully enough to send him to the emergency department. This injury required a minor surgery to address due to physical therapy being unable to address the individual's symptoms. [26] Additionally, a 44-year-old woman needed surgery to recover from an unstable knee due to a prior anterior cruciate ligament (ACL) tear while playing Wii Sports that failed physical therapy recovery just 6 months prior. [25]

A case report from 2004 that was published in The Lancet described a blister on the thumb caused by repetitive use of a Playstation 2 controller. The writer dubbed the condition "PS2 thumb". [27] While named similarly to Nintendo thumb, the two do not have the same cause. Playstation thumb is caused by friction and affects the skin (though associated symptoms can include pain and stiffness in the hands, shoulders, and neck), [3] while Nintendo thumb is caused by injuries to the tendon. [2]

Different forms of Wii-itis

Wii-itis is the general term that is used for any inflammatory disease or injury due to playing with the Wii console. These injuries are categorized into four major classes: tendinopathy, bursitis (inflammation of fluid filled sacs around joints [7] ), enthesitis ("inflammation of sites where tendons and ligaments are attached to the bone" [28] ), and epicondylitis (degeneration of the origin of a tendon in the forearm due to overuse of an extensor muscle). [29] [15]

Common forms of injuries related to the Wii include:

Wii knee

Wii knee describes knee-related injuries that happen while playing with the Wii console. According to a case report from 2008, a teenager twisted and fell on his knee while playing the Wii which caused a lateral patella dislocation. [11] The treatment for his injury required surgery, and he recovered well. [11] This injury can cause osteochondral fractures, tears in tendons, [11] and meniscal injury. [30]

Wii shoulder

Wii shoulder is soreness and pain in shoulder and upper extremities, often due to playing games like Wii tennis or bowling. [15] A case report of a 22-year-old man who injured his left arm after playing a bowling game on Wii was published in 2008. [10] The injury resulted in pain and swelling. [10]

Achilles Wii-itis

Based on case reports, Achilles tendon injuries can happen with different degrees of severity while playing Wii. These injuries may include tear or complete rupture of Achilles tendon. The rupture of the tendon will require surgery, while minor tears can be addressed with non-surgical treatments like physical therapy and use of NSAIDs. [15] In 2009, a case report was published describing a 42-year-old woman who tore her left Achilles tendon after stretching her leg on her Wii Fit board. [9]

PlayStation thumb

PlayStation thumb is defined, similarly to Nintendo thumb, as a repetitive strain injury (RSI) caused by excessive use of a PlayStation controller. This condition includes blistering of the thumbs due to excessive use of pressure and friction with the PlayStation controller during gameplay. There is also hardening of the skin on the thumb (lichenified hyperkeratotic papules) causing the skin to appear leathery. It can also be accompanied by changes to the nail, such as the nail plate lifting from the skin. [31] Other symptoms include stiffness, swelling, pain, and tingling in the arm joints such as wrists, elbows, and shoulders. [3]

The first case of PlayStation thumb was recognized in a letter to an editor in 2004 from a 9-year-old boy. The boy played PlayStation 2 in a rapid manner for about 20 minutes and felt his thumb become numb and a blister formed. After ceasing gameplay for one week, the thumb healed. [32] Several other cases have been published as well. A study involving 120 students in South Africa followed up on the 2004 correspondence and found that 7 of the 17 girls and 8 of the 28 boys who played PlayStation had symptoms of PlayStation Thumb. [3]

PlayStation palmar hidradenitis

Hidradenitis has been diagnosed through an examination to confirm the presence of neutrophils (a type of immune cell present during inflammation) in the eccrine sweat glands. [31] Palmar hidradenitis is the inflammation of the palm, primarily in the eccrine sweat glands, causing lesions on the palmar surface of the hands. These lesions develop when people spend prolonged periods of time using their hands to hold and manipulate PlayStation controllers. [31]

As of 2021, there have been two reported instances of PlayStation palmar hidradenitis:

The first case was in 2009 in a 12-year-old girl. She had painful skin lesions on both palms and nowhere else on her body, and the cause of the condition was sourced to playing PlayStation for several hours per day prior to the lesions forming. After the lesions formed, the girl continued to play PlayStation games, but less intensely than before, which caused the lesions to develop more. The lesions went away completely after stopping playing PlayStation for 10 days. [33]

The second case was in 2017 in a 14-year-old boy who had painful palmar nodules after spending prolonged periods of time playing games and using his mobile phone. Similarly to the last case, he had inflammation containing neutrophils in the eccrine sweat glands in his palms. The palmer lesions healed on their own in two weeks after stopping PlayStation gameplay. [34]

See also

Related Research Articles

<span class="mw-page-title-main">Repetitive strain injury</span> Medical condition

A repetitive strain injury (RSI) is an injury to part of the musculoskeletal or nervous system caused by repetitive use, vibrations, compression or long periods in a fixed position. Other common names include repetitive stress injury, repetitive stress disorders, cumulative trauma disorders (CTDs), and overuse syndrome.

<span class="mw-page-title-main">Game controller</span> Device used with games or entertainment systems

A game controller, gaming controller, or simply controller, is an input device or input/output device used with video games or entertainment systems to provide input to a video game. Input devices that have been classified as game controllers include keyboards, mice, gamepads, and joysticks, as well as special purpose devices, such as steering wheels for driving games and light guns for shooting games. Controllers designs have evolved to include directional pads, multiple buttons, analog sticks, joysticks, motion detection, touch screens and a plethora of other features.

<span class="mw-page-title-main">Tendinopathy</span> Inflammation of the tendon

Tendinopathy is a type of tendon disorder that results in pain, swelling, and impaired function. The pain is typically worse with movement. It most commonly occurs around the shoulder, elbow, wrist, hip, knee, or ankle.

<span class="mw-page-title-main">Achilles tendon</span> Tendon at the back of the lower leg

The Achilles tendon or heel cord, also known as the calcaneal tendon, is a tendon at the back of the lower leg, and is the thickest in the human body. It serves to attach the plantaris, gastrocnemius (calf) and soleus muscles to the calcaneus (heel) bone. These muscles, acting via the tendon, cause plantar flexion of the foot at the ankle joint, and flexion at the knee.

<span class="mw-page-title-main">Wii</span> Home video game console by Nintendo

The Wii is a home video game console developed and marketed by Nintendo. It was released on November 19, 2006, in North America and in December 2006 for most other regions of the world. It is Nintendo's fifth major home game console, following the GameCube and is a seventh-generation console alongside Microsoft's Xbox 360 and Sony's PlayStation 3.

<span class="mw-page-title-main">Achilles tendinitis</span> Medical condition of the ankle and heel

Achilles tendinitis, also known as achilles tendinopathy, occurs when the Achilles tendon, found at the back of the ankle, becomes sore. Achilles tendinopathy is accompanied by alterations in the tendon's structure and mechanical properties. The most common symptoms are pain and swelling around the affected tendon. The pain is typically worse at the start of exercise and decreases thereafter. Stiffness of the ankle may also be present. Onset is generally gradual.

<span class="mw-page-title-main">Analog stick</span> Input device for a video game controller

An analog stick, also known as control stick, joystick or thumbstick, is an input device for a controller that is used for two-dimensional input. An analog stick is a variation of a joystick, consisting of a protrusion from the controller; input is based on the position of this protrusion in relation to the default "center" position. While digital sticks rely on single electrical connections for movement, analog sticks use continuous electrical activity running through potentiometers to measure the exact position of the stick within its full range of motion. The analog stick has greatly overtaken the D-pad in both prominence and usage in console video games.

The Virtual Console is a defunct line of downloadable video games for Nintendo's Wii and Wii U home video game consoles and the Nintendo 3DS family of systems.

A video game accessory is a distinct piece of hardware that is required to use a video game console, or one that enriches the video game's play experience. Essentially, video game accessories are everything except the console itself, such as controllers, memory, power adapters (AC), and audio/visual cables. Most video game consoles come with the accessories required to play games out of the box : one A/V cable, one AC cable, and a controller. Memory is usually the most required accessory outside of these, as game data cannot be saved to compact discs. The companies that manufacture video game consoles also make these accessories for replacement purposes as well as improving the overall experience. There is an entire industry of companies that create accessories for consoles as well, called third-party companies. The prices are often lower than those made by the maker of the console (first-party). This is usually achieved by avoiding licensing or using cheaper materials. For the mobile systems like the PlayStation Portable and Game Boy iterations, there are many accessories to make them more usable in mobile environments, such as mobile chargers, lighting to improve visibility, and cases to both protect and help organize the collection of system peripherals to. Newer accessories include many home-made things like mod chips to bypass manufacturing protection or homemade software.

<span class="mw-page-title-main">Flexor retinaculum of the hand</span> Thickened fascia over the carpal tunnel

The flexor retinaculum is a fibrous band on the palmar side of the hand near the wrist. It arches over the carpal bones of the hands, covering them and forming the carpal tunnel.

<span class="mw-page-title-main">Wii Remote</span> Primary game controller for the Nintendo Wii

The Wii Remote, also known colloquially as the Wiimote, is the primary game controller for Nintendo's Wii home video game console. An essential capability of the Wii Remote is its motion sensing capability, which allows the user to interact with and manipulate items on screen via motion sensing, gesture recognition, and pointing using an accelerometer and optical sensor technology. It is expandable by adding attachments. The attachment bundled with the Wii console is the Nunchuk, which complements the Wii Remote by providing functions similar to those in gamepad controllers. Some other attachments include the Classic Controller, Wii Zapper, and the Wii Wheel, which was originally released with the racing game, Mario Kart Wii.

<span class="mw-page-title-main">Classic Controller</span> Game controller for the Wii by Nintendo

The Classic Controller is a game controller produced by Nintendo for the Wii home video game console. While it later featured some compatibility with the Wii U console, the controller was ultimately succeeded by the Wii U Pro Controller. In April 2014, Nintendo discontinued production of both the Classic Controller and Classic Controller Pro.

Hidradenitis is any disease in which the histologic abnormality is primarily an inflammatory infiltrate around the eccrine glands. This group includes neutrophilic eccrine hidradenitis and recurrent palmoplantar hidradenitis.

<span class="mw-page-title-main">Motion controller</span> Video game controller that tracks motions

In computing, a motion controller is a type of input device that uses accelerometers, gyroscopes, cameras, or other sensors to track motion.

<span class="mw-page-title-main">Nintendo video game consoles</span> Overview of the various video game consoles released by Nintendo

The Japanese multinational consumer electronics company Nintendo has developed seven home video game consoles and multiple portable consoles for use with external media, as well as dedicated consoles and other hardware for their consoles. As of September 30, 2021, in addition to Nintendo Switch, Nintendo has sold over 863.07 million hardware units.

Game addiction problems can induce repetitive strain injuries, skin disorders or other health issues. Other problems include video game-provoked seizures in patients with epilepsy. In rare and extreme cases, deaths have resulted from excessive video game playing.

<span class="mw-page-title-main">Median nerve palsy</span> Medical condition

Injuries to the arm, forearm or wrist area can lead to various nerve disorders. One such disorder is median nerve palsy. The median nerve controls the majority of the muscles in the forearm. It controls abduction of the thumb, flexion of hand at wrist, flexion of digital phalanx of the fingers, is the sensory nerve for the first three fingers, etc. Because of this major role of the median nerve, it is also called the eye of the hand. If the median nerve is damaged, the ability to abduct and oppose the thumb may be lost due to paralysis of the thenar muscles. Various other symptoms can occur which may be repaired through surgery and tendon transfers. Tendon transfers have been very successful in restoring motor function and improving functional outcomes in patients with median nerve palsy.

<span class="mw-page-title-main">Wii U</span> Home video game console by Nintendo

The Wii U is a home video game console developed by Nintendo as the successor to the Wii. Released in late 2012, it is the first eighth-generation video game console and competed with Microsoft's Xbox One and Sony's PlayStation 4.

Linburg–Comstock variation is an occasional tendinous connection between the flexor pollicis longus and the flexor digitorum profundus of the index, the middle finger or both. It is found in around 21% of the population. It is an anatomical variation in human, which may be viewed as a pathology if causes symptoms. It was recognised as early as the 1800s, but was first described by Linburg and Comstock in 1979.

<span class="mw-page-title-main">Home video game console generations</span> Video game consoles released during the same period

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References

  1. "Gamer's thumb: a looming injury for console gamers". Esports Healthcare. 10 November 2019. Retrieved 2022-07-30.
  2. 1 2 3 4 5 6 7 Jalink MB, Heineman E, Pierie JP, ten Cate Hoedemaker HO (December 2014). "Nintendo related injuries and other problems: review". BMJ. 349: g7267. doi:10.1136/bmj.g7267. PMC   4267699 . PMID   25515525.
  3. 1 2 3 4 5 Karim SA (June 2005). "Playstation thumb--a new epidemic in children". South African Medical Journal = Suid-Afrikaanse Tydskrif vir Geneeskunde. 95 (6): 412. PMID   16100887.
  4. "Paresthesia | National Institute of Neurological Disorders and Stroke". National Institute of Neurological Disorders and Stroke. Retrieved 2022-07-28.
  5. Pal B (June 2002). "10-minute consultation: Paraesthesia". BMJ. 324 (7352): 1501. doi:10.1136/bmj.324.7352.1501. PMC   116450 . PMID   12077040.
  6. "Tendinitis". MedlinePlus. U.S. National Library of Medicine. Retrieved 2022-07-28.
  7. 1 2 "Bursitis". MedlinePlus. U.S. National Library of Medicine. Retrieved 2022-07-28.
  8. "Carpal Tunnel Syndrome Fact Sheet". National Institute of Neurological Disorders and Stroke. Retrieved 2022-07-28.
  9. 1 2 Beddy P, Dunne R, de Blacam C (February 2009). "Achilles wiiitis". AJR. American Journal of Roentgenology. 192 (2): W79. doi:10.2214/AJR.08.1654. PMID   19155386.
  10. 1 2 3 Nett MP, Collins MS, Sperling JW (May 2008). "Magnetic resonance imaging of acute "wiiitis" of the upper extremity". Skeletal Radiology. 37 (5): 481–483. doi:10.1007/s00256-008-0456-1. PMID   18259743. S2CID   9806901.
  11. 1 2 3 4 Robinson RJ, Barron DA, Grainger AJ, Venkatesh R (July 2008). "Wii knee". Emergency Radiology. 15 (4): 255–257. doi:10.1007/s10140-008-0712-7. PMID   18340471. S2CID   1153806.
  12. Gibofsky A (January 1983). "Pac-Man phalanx". Arthritis and Rheumatism. 26 (1): 120. doi:10.1002/art.1780260127. PMID   6824505.
  13. Neiman R, Ushiroda S (May 1981). "Slot-machine tendinitis". The New England Journal of Medicine. 304 (22): 1368. doi:10.1056/NEJM198105283042228. PMID   7219501.
  14. "Nintendo - about us". www.nintendo.com. Retrieved 2022-08-01.
  15. 1 2 3 4 Sparks DA, Coughlin LM, Chase DM (July 2011). "Did too much Wii cause your patient's injury?". The Journal of Family Practice. 60 (7): 404–409. PMID   21731918.
  16. Osterman AL, Weinberg P, Miller G (February 1987). "Joystick digit". JAMA. 257 (6): 782. doi:10.1001/jama.1987.03390060072023. PMID   3806854.
  17. Hart EJ (May 1990). "Nintendo epilepsy". The New England Journal of Medicine. 322 (20): 1473. doi:10.1056/NEJM199005173222020. PMID   2330021.
  18. Casanova J, Casanova J (January 1991). ""Nintendinitis"". The Journal of Hand Surgery. 16 (1): 181. doi:10.1016/s0363-5023(10)80043-7. PMID   1995681.
  19. 1 2 3 Straker L, Abbott R, Collins R, Campbell A (2014). "Evidence-based guidelines for wise use of electronic games by children". Ergonomics. 57 (4): 471–489. doi:10.1080/00140139.2014.895856. PMID   24665962. S2CID   21211580.
  20. "Gamer's Thumb: Prevention and Relief for Console Gamers". November 10, 2019.
  21. Emara AK, Ng MK, Cruickshank JA, Kampert MW, Piuzzi NS, Schaffer JL, King D (December 2020). "Gamer's Health Guide: Optimizing Performance, Recognizing Hazards, and Promoting Wellness in Esports". Current Sports Medicine Reports. 19 (12): 537–545. doi: 10.1249/JSR.0000000000000787 . PMID   33306517. S2CID   228078251.
  22. Tholl C, Bickmann P, Wechsler K, Froböse I, Grieben C (July 2022). "Musculoskeletal disorders in video gamers - a systematic review". BMC Musculoskeletal Disorders. 23 (1): 678. doi: 10.1186/s12891-022-05614-0 . PMC   9288077 . PMID   35842605.
  23. "BBC News | SCI/TECH | Nintendo to hand out gaming gloves". news.bbc.co.uk. Retrieved 2022-07-26.
  24. 1 2 Singh R, Manoharan G, Moores TS, Patel A (May 2014). "Nintendo Wii related Achilles tendon rupture: first reported case and literature review of motion sensing video game injuries". BMJ Case Reports. 2014: bcr2013202657. doi:10.1136/bcr-2013-202657. PMC   4024543 . PMID   24827648.
  25. 1 2 Müller SA, Vavken P, Pagenstert G (March 2015). "Simulated activity but real trauma: a systematic review on Nintendo Wii injuries based on a case report of an acute anterior cruciate ligament rupture". Medicine. 94 (12): e648. doi:10.1097/MD.0000000000000648. PMC   4554002 . PMID   25816033.
  26. Brown CN, McKenna P (November 2009). "A Wii-related clay-shoveler's fracture". TheScientificWorldJournal. 9: 1190–1191. doi: 10.1100/tsw.2009.134 . PMC   5823229 . PMID   19882086.
  27. Vaidya HJ (March 2004). "Playstation thumb". Lancet. 363 (9414): 1080. doi:10.1016/S0140-6736(04)15865-0. PMID   15051306. S2CID   26563611.
  28. Schett G, Lories RJ, D'Agostino MA, Elewaut D, Kirkham B, Soriano ER, McGonagle D (November 2017). "Enthesitis: from pathophysiology to treatment". Nature Reviews. Rheumatology. 13 (12): 731–741. doi:10.1038/nrrheum.2017.188. PMID   29158573. S2CID   24724763.
  29. Johns N, Shridhar V (November 2020). "Lateral epicondylitis: Current concepts". Australian Journal of General Practice. 49 (11): 707–709. doi: 10.31128/AJGP-07-20-5519 . PMID   33123709. S2CID   226206273.
  30. Almedghio SM, Shablahidis O, Rennie W, Ashford RU (2009). "Wii knee revisited: meniscal injury from 10-pin bowling". BMJ Case Reports. 2009: bcr1120081189. doi:10.1136/bcr.11.2008.1189. PMC   3028024 . PMID   21686424.
  31. 1 2 3 Kyriakou G, Glentis A (June 2021). "Skin in the game: Video-game-related cutaneous pathologies in adolescents". International Journal of Pediatrics & Adolescent Medicine. 8 (2): 68–75. doi:10.1016/j.ijpam.2019.09.002. PMC   8144863 . PMID   34084875.
  32. Vaidya HJ (March 2004). "Playstation thumb". Lancet. 363 (9414): 1080. doi:10.1016/S0140-6736(04)15865-0. PMID   15051306. S2CID   26563611.
  33. Kasraee B, Masouyé I, Piguet V (April 2009). "PlayStation palmar hidradenitis". The British Journal of Dermatology. 160 (4): 892–894. doi:10.1111/j.1365-2133.2009.09058.x. PMID   19239462. S2CID   44461831.
  34. Lee LY, Koh MJ (September 2017). "Palmar Eccrine Hidradenitis Secondary to Trauma from Computer Gaming in an Adolescent After Bone Marrow Transplantation". Pediatric Dermatology. 34 (5): e283–e285. doi:10.1111/pde.13224. PMID   28771804. S2CID   20603533.

Further reading