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Stevens–Johnson syndrome (SJS) is a type of severe skin reaction. Together with toxic epidermal necrolysis (TEN) and Stevens–Johnson/toxic epidermal necrolysis (SJS/TEN) overlap, they are considered febrile mucocutaneous drug reactions and probably part of the same spectrum of disease, with SJS being less severe. Erythema multiforme (EM) is generally considered a separate condition. Early symptoms of SJS include fever and flu-like symptoms. A few days later, the skin begins to blister and peel, forming painful raw areas. Mucous membranes, such as the mouth, are also typically involved. Complications include dehydration, sepsis, pneumonia and multiple organ failure.
Genital warts are a sexually transmitted infection caused by certain types of human papillomavirus (HPV). They may be flat or project out from the surface of the skin, and their color may vary; brownish, white, pale yellow, pinkish-red, or gray. There may be a few individual warts or several, either in a cluster or merged together to look cauliflower-shaped. They can be itchy and feel burning. Usually they cause few symptoms, but can occasionally be painful. Typically they appear one to eight months following exposure. Warts are the most easily recognized symptom of genital HPV infection.
Penile cancer, or penile carcinoma, is a cancer that develops in the skin or tissues of the penis. Symptoms may include abnormal growth, an ulcer or sore on the skin of the penis, and bleeding or foul smelling discharge.
Lichen planus (LP) is a chronic inflammatory and autoimmune disease that affects the skin, nails, hair, and mucous membranes. It is not an actual lichen, but is named for its appearance. It is characterized by polygonal, flat-topped, violaceous papules and plaques with overlying, reticulated, fine white scale, commonly affecting dorsal hands, flexural wrists and forearms, trunk, anterior lower legs and oral mucosa. The hue may be gray-brown in people with darker skin. Although there is a broad clinical range of LP manifestations, the skin and oral cavity remain as the major sites of involvement. The cause is unknown, but it is thought to be the result of an autoimmune process with an unknown initial trigger. There is no cure, but many different medications and procedures have been used in efforts to control the symptoms.
Lichen sclerosus (LS) is a chronic, inflammatory skin disease of unknown cause which can affect any body part of any person but has a strong preference for the genitals and is also known as balanitis xerotica obliterans (BXO) when it affects the penis. Lichen sclerosus is not contagious. There is a well-documented increase of skin cancer risk in LS, potentially improvable with treatment. LS in adult age women is normally incurable, but improvable with treatment, and often gets progressively worse if not treated properly. Most males with mild or intermediate disease restricted to foreskin or glans can be cured by either medical or surgical treatment.
Actinic keratosis (AK), sometimes called solar keratosis or senile keratosis, is a pre-cancerous area of thick, scaly, or crusty skin. Actinic keratosis is a disorder of epidermal keratinocytes that is induced by ultraviolet (UV) light exposure. These growths are more common in fair-skinned people and those who are frequently in the sun. They are believed to form when skin gets damaged by UV radiation from the sun or indoor tanning beds, usually over the course of decades. Given their pre-cancerous nature, if left untreated, they may turn into a type of skin cancer called squamous cell carcinoma. Untreated lesions have up to a 20% risk of progression to squamous cell carcinoma, so treatment by a dermatologist is recommended.
Dermatopathology is a joint subspecialty of dermatology and pathology or surgical pathology that focuses on the study of cutaneous diseases at a microscopic and molecular level. It also encompasses analyses of the potential causes of skin diseases at a basic level. Dermatopathologists work in close association with clinical dermatologists, with many possessing further clinical training in dermatology. The field was founded by German dermatologist and physician Gustav Simon, who published the first textbook on dermatopathology, 'Skin Diseases Illustrated by Anatomical Investigations', in 1848.
Vellus hair is short, thin, light-colored, and barely noticeable hair that develops on most of a human's body during childhood. Exceptions include the lips, the back of the ear, the palm of the hand, the sole of the foot, some external genital areas, the navel, and scar tissue. The density of hair – the number of hair follicles per area of skin – varies from person to person. Each strand of vellus hair is usually less than 2 mm long and the follicle is not connected to a sebaceous gland.
Pearly penile papules are benign, small bumps or spots on the human penis. They vary in size from 1–4 mm, are pearly or flesh-colored, smooth and dome-topped or filiform, and appear in one or, several rows around the corona, the ridge of the head of the penis and sometimes on the penile shaft. They are painless, non-cancerous and not harmful. The medical condition of having such papules is called hirsutoid papillomatosis or hirsuties papillaris coronae glandis.
Morphea is a form of scleroderma that mainly involves isolated patches of hardened skin on the face, hands, and feet, or anywhere else on the body, usually with no internal organ involvement. However, in Deep Morphea inflammation and sclerosis can be found in the deep dermis, panniculus, fascia, superficial muscle and bone.
The Koebner phenomenon or Köbner phenomenon, also called the Koebner response or the isomorphic response, attributed to Heinrich Köbner, is the appearance of skin lesions on lines of trauma. The Koebner phenomenon may result from either a linear exposure or irritation. Conditions demonstrating linear lesions after a linear exposure to a causative agent include: molluscum contagiosum, warts and toxicodendron dermatitis. Warts and molluscum contagiosum lesions can be spread in linear patterns by self-scratching ("auto-inoculation"). Toxicodendron dermatitis lesions are often linear from brushing up against the plant. Causes of the Koebner phenomenon that are secondary to scratching rather than an infective or chemical cause include vitiligo, psoriasis, lichen planus, lichen nitidus, pityriasis rubra pilaris, and keratosis follicularis.
Henry Radcliffe Crocker, FRCP was an English dermatologist. Originally from Hove in Sussex, England, Crocker started his working life as an apprentice to a general practitioner before going to London to attend the University College Hospital medical school. Working as a resident medical officer with William Tilbury Fox, Crocker began a lifelong career in dermatology. With his 1888 book Diseases of the Skin: their Description, Pathology, Diagnosis and Treatment, he became known as a leading figure of dermatology.
The British Journal of Dermatology is a monthly peer-reviewed medical journal that covers the field of dermatology. It is published by Wiley-Blackwell on behalf of the British Association of Dermatologists. The journal was established in 1888 and the editor-in-chief is John Ingram. According to the Journal Citation Reports, the journal has a 2020 impact factor of 9.3., ranked third within the dermatology subject category.
William Tilbury Fox, MD, FRCP was an English dermatologist.
George Hector Percival FRSE FRCPE (1902–1983) was a British dermatologist, academic author and president of the British Association of Dermatologists.
Peter Edward Darrell Sheldon Wilkinson was a leading figure in dermatology who was consultant at Aylesbury and High Wycombe, co-edited the first edition of Rook's 1968 Textbook of Dermatology and founded the International Foundation for Dermatology in 1987.
Venkataram Mysore is a dermatologist, dermatopathologist, and hair transplant surgeon from Bangalore, India. He has over 30 years experience as a dermatologist, 18 years as a teacher and is currently the director of the Venkat Center for Advanced Dermatology and Post-Graduate Training.
The International Society for the Study of Vulvovaginal Disease (ISSVD) is a non-profit organization that was founded in 1970 at the Sixth World Congress of the International Federation of Obstetricians and Gynecologists (FIGO) in New York City. It is composed of health care professionals from different areas, including, gynecologists, dermatologists, general practitioners, physiotherapist, nurse practitioners, etc. devoted to the study, investigation, and treatment of vulvovaginal diseases.
Esther Ellen Freeman is an American physician who is an Assistant Professor of Dermatology at the Harvard Medical School and Director of Global Health Dermatology at Massachusetts General Hospital. Her research considers HIV infection with AIDS-defining malignancies, including Kaposi's sarcoma. During the COVID-19 pandemic Freeman established the American Academy of Dermatology register of COVID-19 skin complaints, through which she identified the novel symptom of COVID toes.
Jenna Lester is an American dermatologist and faculty member at the University of California, San Francisco (UCSF). Lester founded the UCSF Skin of Color Clinic, where she is the director. The clinic looks to address health disparities by providing dermatological care to people of color.
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- ↑ "British Skin Foundation - Charity number: 1171373". Charity Commission for England and Wales. Retrieved 17 September 2020.