Counterirritant

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A counterirritant is a substance which creates irritation or mild inflammation in one location with the goal of lessening discomfort and/or inflammation in another location. [1] This strategy falls into the more general category of counterstimulation.

Topical counter-irritants are non-analgesic, non-anesthetic substances or treatments used to treat pain. Capsaicin, menthol (mint oil), methyl salicylate, and camphor are examples of counterirritants. Heat and cold therapy and massage relieve pain by counterstimulation.[ citation needed ]

The US Food and Drug Administration defines a counterirritant as "An externally applied substance that causes irritation or mild inflammation of the skin for the purpose of relieving pain in muscles, joints and viscera distal to the site of application. They differ from the anesthetics, analgesics, and antipruritic agents, however, in that the pain relief they produce results from stimulation—rather than depression—of the cutaneous sensory receptors and occurs in structures of the body other than the skin areas to which they are applied as for example, in joints, muscles, tendons and certain viscera. The use of these products dates from antiquity." [2]

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<span class="mw-page-title-main">Nonsteroidal anti-inflammatory drug</span> Class of therapeutic drug for relieving pain and inflammation

Non-steroidal anti-inflammatory drugs (NSAID) are members of a therapeutic drug class which reduces pain, decreases inflammation, decreases fever, and prevents blood clots. Side effects depend on the specific drug, its dose and duration of use, but largely include an increased risk of gastrointestinal ulcers and bleeds, heart attack, and kidney disease.

<span class="mw-page-title-main">Menthol</span> Organic compound used as flavouring and analgesic

Menthol is an organic compound, more specifically a monoterpenoid, made synthetically or obtained from the oils of corn mint, peppermint, or other mints. It is a waxy, clear or white crystalline substance, which is solid at room temperature and melts slightly above.

<span class="mw-page-title-main">Irritation</span> State of inflammation

Irritation, in biology and physiology, is a state of inflammation or painful reaction to allergy or cell-lining damage. A stimulus or agent which induces the state of irritation is an irritant. Irritants are typically thought of as chemical agents but mechanical, thermal (heat), and radiative stimuli can also be irritants. Irritation also has non-clinical usages referring to bothersome physical or psychological pain or discomfort.

<span class="mw-page-title-main">Route of administration</span> Path by which a drug, fluid, poison, or other substance is taken into the body

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<span class="mw-page-title-main">Intramuscular injection</span> Medical injection into a muscle

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<span class="mw-page-title-main">Anesthetic</span> Drug that causes anesthesia

An anesthetic or anaesthetic is a drug used to induce anesthesia ⁠— ⁠in other words, to result in a temporary loss of sensation or awareness. They may be divided into two broad classes: general anesthetics, which result in a reversible loss of consciousness, and local anesthetics, which cause a reversible loss of sensation for a limited region of the body without necessarily affecting consciousness.

<span class="mw-page-title-main">Indometacin</span> Anti-inflammatory drug

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<span class="mw-page-title-main">Mefenamic acid</span> Chemical compound

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Neomycin/polymyxin B/bacitracin, also known as triple antibiotic ointment, is a medication used to reduce the risk of infections following minor skin injuries. It contains three antibiotics: neomycin, polymyxin B, and bacitracin. It is for topical use only and should not be ingested due to risk of kidney damage.

<span class="mw-page-title-main">Intrathecal administration</span> Drug injected into the spinal canal

Intrathecal administration is a route of administration for drugs via an injection into the spinal canal, or into the subarachnoid space so that it reaches the cerebrospinal fluid (CSF) and is useful in spinal anesthesia, chemotherapy, or pain management applications. This route is also used to introduce drugs that fight certain infections, particularly post-neurosurgical. The drug needs to be given this way to avoid being stopped by the blood–brain barrier. The same drug given orally must enter the blood stream and may not be able to pass out and into the brain. Drugs given by the intrathecal route often have to be compounded specially by a pharmacist or technician because they cannot contain any preservative or other potentially harmful inactive ingredients that are sometimes found in standard injectable drug preparations.

<span class="mw-page-title-main">Ear drop</span> Form of medication placed in ears

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Magnesium salicylate is a common analgesic and nonsteroidal anti-inflammatory drug (NSAID) used to treat mild to moderate musculoskeletal pain such as in tendons and muscles. It is also used to treat joint pain like arthritis, general back pain, and headaches.

<span class="mw-page-title-main">Minard's Liniment</span> Medicine brand

Minard's is a brand of liniment.

A transdermal analgesic or pain relief patch is a medicated adhesive patch used to relieve minor to severe pain. There are three primary types of analgesic patches. First are patches containing counterirritants, which are used to treat mild to moderate pain. Second are patches containing opioids, such as Buprenorphine and Fentanyl, narcotics used to relieve moderate to severe pain. Fentanyl is often used for opioid-tolerant patients. Most obscure of all are patched containing Nitroglycerin, also known as glyceryl trinitrate (GTN), a medication used for heart failure, high blood pressure, anal fissures, painful periods, and to treat and prevent chest pain.

Pain in cancer may arise from a tumor compressing or infiltrating nearby body parts; from treatments and diagnostic procedures; or from skin, nerve and other changes caused by a hormone imbalance or immune response. Most chronic (long-lasting) pain is caused by the illness and most acute (short-term) pain is caused by treatment or diagnostic procedures. However, radiotherapy, surgery and chemotherapy may produce painful conditions that persist long after treatment has ended.

<span class="mw-page-title-main">Grapiprant</span> Chemical compound

Grapiprant is a small molecule drug that belongs in the piprant class. This analgesic and anti-inflammatory drug is primarily used as a pain relief for mild to moderate inflammation related to osteoarthritis in dogs. Grapiprant has been approved by the FDA's Center for Veterinary Medicine and was categorized as a non-cyclooxygenase inhibiting non-steroidal anti-inflammatory drug (NSAID) in March 2016.

<span class="mw-page-title-main">Antiarthritics</span>

An antiarthritic is any member of the group of drugs used to relieve or prevent arthritic symptoms, such as joint pain and joint stiffness. Depending on the antiarthritic drug class, it can be responsible for managing pain, reducing inflammation and/or acting as an immunosuppressant. These drugs are typically given orally, topically or through administration by injection. The choice of antiarthritic medication is often determined by the type/nature of arthritis, the severity of symptoms as well as other factors, such as the tolerability of side effects.

References

  1. "Definition of Counterirritant". Merriam Webster. Archived from the original on 14 March 2022. Retrieved 14 March 2022.
  2. Federal Register | Vol. 44, No. 234. California (CA): Food and Drug Administration (FDA). 4 December 1979. Archived from the original on 14 March 2022.