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Pronunciation. pɪˈtiːkɪə. Specialty. Rheumatology. A petechia (/ pɪˈtiːkiə /; [1] pl.: petechiae) is a small red or purple spot (≤4 mm in diameter) that can appear on the skin, conjunctiva, retina, and mucous membranes which is caused by haemorrhage of capillaries. [2][3] The word is derived from Italian petecchia ' freckle ', of ...
If your whole eye has gone red, learn about the causes of bloodshot eyes and how to fix them. Weirdly enough, a red spot on eye might have a cause totally unrelated to your eyes: sneezing or coughing.
Psoriasis is a long-lasting, noncontagious autoimmune disease characterized by patches of abnormal skin. [4][5] These areas are red, pink, or purple, dry, itchy, and scaly. [8][3] Psoriasis varies in severity from small localized patches to complete body coverage. [3] Injury to the skin can trigger psoriatic skin changes at that spot, which is ...
During the summer, tanning of the surrounding normal skin makes the pale patches of pityriasis alba more prominent. [1] Individual lesions develop through 3 stages and sometimes are itchy: Raised and red – although the redness is often mild and not noticed by parents; Raised and pale; Smooth flat pale patches [1]
Erythrodermic psoriasis is serious and may be life-threatening. It causes redness and swelling in the skin that looks like a burn. This type of psoriasis covers at least 75% of the body ...
Specialty. Dermatology, hematology. Purpura (/ ˈpɜːrpjʊərə / [1]) is a condition of red or purple discolored spots on the skin that do not blanch on applying pressure. The spots are caused by bleeding underneath the skin secondary to platelet disorders, vascular disorders, coagulation disorders, or other causes. [2]
Psoriasis is a chronic skin condition that causes red, scaly patches, says Dr. Kamangar. These patches can occur anywhere on the body, but are most commonly found on the scalp, elbows, knees, and ...
Erythema migrans or erythema chronicum migrans is an expanding rash often seen in the early stage of Lyme disease, and can also (but less commonly) be caused by southern tick-associated rash illness (STARI). [1][2] It can appear anywhere from one day to one month after a tick bite. This rash does not represent an allergic reaction to the bite ...
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