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  2. Lightning injury - Wikipedia

    en.wikipedia.org/wiki/Lightning_injury

    The marks are formed when capillaries beneath the skin rupture due to the electrical discharge and they usually appear "within hours" of the strike though they tend to disappear within a few days. They also generally occur on the upper body. [9] The brief duration of the exposure frequently limits the damage to the outer layer of skin. [10]

  3. Transdermal analgesic patch - Wikipedia

    en.wikipedia.org/wiki/Transdermal_analgesic_patch

    Fentanyl patches are indicated only for patients with moderate to severe chronic pain who have been taking regular narcotic pain medication for more than a week and who are considered opioid-tolerant. Overdose can occur when patients use more patches than prescribed, change the patches too frequently, or expose the patches to extreme heat. [7]

  4. Urushiol-induced contact dermatitis - Wikipedia

    en.wikipedia.org/wiki/Urushiol-induced_contact...

    The rash typically persists one to two weeks, but in some cases may last up to five weeks. Urushiol is primarily found in the spaces between cells beneath the outer skin of the plant, so the effects are less severe if the plant tissue remains undamaged on contact. Once the oil and resin are thoroughly washed from the skin, the rash is not ...

  5. Counterirritant - Wikipedia

    en.wikipedia.org/wiki/Counterirritant

    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.

  6. Drug rash with eosinophilia and systemic symptoms - Wikipedia

    en.wikipedia.org/wiki/Drug_rash_with_eosinophil...

    The symptoms of DRESS syndrome usually begin 2 to 6 weeks but uncommonly up to 8–16 weeks after exposure to an offending drug. Symptoms generally include fever, an often itchy rash which may be morbilliform or consist mainly of macules or plaques, facial edema (i.e. swelling, which is a hallmark of the disease), enlarged and sometimes painful lymph nodes, and other symptoms due to ...

  7. Dermatophytosis - Wikipedia

    en.wikipedia.org/wiki/Dermatophytosis

    Dermatophytosis, also known as tinea and ringworm, is a fungal infection of the skin [2] (a dermatomycosis), that may affect skin, hair, and nails. [1] Typically it results in a red, itchy, scaly, circular rash. [1] Hair loss may occur in the area affected. [1] Symptoms begin four to fourteen days after exposure. [1]

  8. Swimmer's itch - Wikipedia

    en.wikipedia.org/wiki/Swimmer's_itch

    Swimmer's itch, cercarial dermatitis or schistosome dermatitis is a short-term allergic contact dermatitis occurring in the skin of humans that have been infected by water-borne schistosomes, a type of flatworm. It is common in freshwater, brackish and marine habitats worldwide. [1]

  9. Tolnaftate - Wikipedia

    en.wikipedia.org/wiki/Tolnaftate

    skin rash; itching or hives; swelling of the face, lips, or tongue; inflammation, redness, or pain at the affected area; Less severe side effects include: [6] dry skin; mild skin irritation, burning, or itching at the affected area