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  2. Necrolytic acral erythema - Wikipedia

    en.wikipedia.org/wiki/Necrolytic_acral_erythema

    Three stages characterize the evolution of necrolytic acral erythema lesions: early, well-developed, and late. Scaly, erythematous papules or plaques with a distinctively dark or worn center first emerge. When the lesions reach a well-developed stage, they combine to create a thick, hyperpigmented plaque that is clearly defined and has adhering ...

  3. Psoriasis - Wikipedia

    en.wikipedia.org/wiki/Psoriasis

    Psoriatic plaque, showing a silvery center surrounded by a reddened border. Psoriasis vulgaris (also known as chronic stationary psoriasis or plaque-like psoriasis) is the most common form and affects 85–90% of people with psoriasis. [13] Plaque psoriasis typically appears as raised areas of inflamed skin covered with silvery-white, scaly ...

  4. Annular erythema of infancy - Wikipedia

    en.wikipedia.org/wiki/Annular_erythema_of_infancy

    Annular erythema of infancy (AEI) consists of self-limited eruptions of erythematous, annular to polycyclic patches and plaques. It is an idiopathic figurate erythema. [1] Over several days, a single lesion disappears without leaving behind any scale or hyperpigmentation. Mostly affecting the trunk, face, and extremities, this rash has no symptoms.

  5. Erythema - Wikipedia

    en.wikipedia.org/wiki/Erythema

    It can be caused by infection, massage, electrical treatment, acne medication, allergies, exercise, solar radiation (), photosensitization, [3] acute radiation syndrome, mercury toxicity, blister agents, [4] niacin administration, [5] or waxing and tweezing of the hairs—any of which can cause the affected capillaries to dilate, resulting in redness.

  6. Pityriasis lichenoides - Wikipedia

    en.wikipedia.org/wiki/Pityriasis_lichenoides

    PLC presents with a far slower clinical course than both febrile ulceronecrotic Mucha-Habermann disease and PLEVA. Similar to PLC, the lesion begins as an erythematous papule that turns reddish-brown and is easily detached to reveal a shiny, pinkish-brown surface. The lesion also has a centrally adherent micaceous scale.

  7. Tumid lupus erythematosus - Wikipedia

    en.wikipedia.org/wiki/Tumid_lupus_erythematosus

    Papules and plaques of tumid lupus erythematosus can create an annular pattern in certain patients, resembling annular subacute cutaneous lupus erythematosus (SCLE), with less edema at the center. A Blaschkoid distribution, [ 9 ] [ 10 ] scalp involvement resembling alopecia areata , [ 11 ] and periorbital edema are less frequent signs of tumid ...

  8. Gottron's sign - Wikipedia

    en.wikipedia.org/wiki/Gottron's_sign

    Gottron's sign is a pathognomonic cutaneous manifestation associated with dermatomyositis (DM), which is an inflammatory disorder affecting the skin and muscles. [1] The primary lesion of dermatomyositis appears as a violaceous, macular erythema with a symmetric distribution, which may progress and become poikilodermatous (atrophic with telangiectasia and pigmentary changes) and indurated (as ...

  9. Alopecia mucinosa - Wikipedia

    en.wikipedia.org/wiki/Alopecia_mucinosa

    Alopecia mucinosa, also known as Follicular mucinosis, Mucinosis follicularis, Pinkus' follicular mucinosis, and Pinkus' follicular mucinosis–benign primary form, is a skin disorder that generally presents, but not exclusively, as erythematous plaques or flat patches without hair primarily on the scalp, neck and face.