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  2. Dermatographic urticaria - Wikipedia

    en.wikipedia.org/wiki/Dermatographic_urticaria

    Dermatographic urticaria is sometimes called "skin writing", as it is possible to mark deliberate patterns onto the skin. The condition manifests as an allergic-like reaction, causing a warm red wheal to appear on the skin. As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic ...

  3. Livedo reticularis - Wikipedia

    en.wikipedia.org/wiki/Livedo_reticularis

    Livedo reticularis is a common skin finding consisting of a mottled reticulated vascular pattern that appears as a lace-like purplish discoloration of the skin. [1] The discoloration is caused by reduction in blood flow through the arterioles that supply the cutaneous capillaries, resulting in deoxygenated blood showing as blue discoloration ().

  4. Lichenification - Wikipedia

    en.wikipedia.org/wiki/Lichenification

    There are several treatments for lichenification. If affected skin is left alone, the ailment can slowly go away on its own. However, due to the itch-scratch-cycle, this method is not very common. [5] Generally, lichenification is treated with topical steroids and moisturizers, [6] but remedies including light-therapy and acupuncture are noted ...

  5. Mycobacterial cervical lymphadenitis - Wikipedia

    en.wikipedia.org/wiki/Mycobacterial_cervical...

    The most usual signs and symptoms are the appearance of a chronic, painless mass in the neck, which is persistent and usually grows with time.The mass is referred to as a "cold abscess", because there is no accompanying local color or warmth and the overlying skin acquires a violaceous (bluish-purple) color.

  6. Notalgia paresthetica - Wikipedia

    en.wikipedia.org/wiki/Notalgia_paresthetica

    Therapy for notalgia paresthetica is directed at controlling symptoms, as no cure exists for the condition. Available treatments include local anesthetics, topical capsaicin, [6] [7] topical corticosteroids, [8] hydroxyzine, oxcarbazepine, palmitoylethanolamide and gabapentin. Paravertebral nerve block and botulinum toxin injections may also be ...

  7. Hives - Wikipedia

    en.wikipedia.org/wiki/Hives

    Hives, also known as urticaria, is a kind of skin rash with red and/or flesh-colored, raised, itchy bumps. [1] Hives may burn or sting. [2] The patches of rash may appear on different body parts, [2] with variable duration from minutes to days, and do not leave any long-lasting skin change. [2]

  8. Cyanosis - Wikipedia

    en.wikipedia.org/wiki/Cyanosis

    Cyanosis is the change of body tissue color to a bluish-purple hue, as a result of decrease in the amount of oxygen bound to the hemoglobin in the red blood cells of the capillary bed. [1] Cyanosis is apparent usually in the body tissues covered with thin skin , including the mucous membranes , lips, nail beds , and ear lobes. [ 1 ]

  9. Majocchi's disease - Wikipedia

    en.wikipedia.org/wiki/Majocchi's_disease

    Majocchi's disease, also known as Purpura annularis telangiectodes of Majocchi [1] is a not-well-recognized and uncommon skin condition characterized by purple/bluish-red 1- to 3-cm annular patches composed of dark red telangiectases with petechiae.