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What it looks like: Like seborrheic dermatitis, perioral dermatitis causes red, inflamed skin and small pustules around the nose and mouth. Other symptoms to note : Flare-ups can be itchy and ...
It can also present in the mouth as angular chelitis, which is an infection caused by either staphylococcus or candidiasis, and can make the corners of the mouth appear red and crispy. Sickle cell disease is a hereditary genetic condition that results in deformed red blood cells to be formed. Sickle patients can experience sickle crisis, these ...
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]
A petechia (/ p ɪ ˈ t iː k i ə /; [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 obscure origin. [1]
Scalp psoriasis is an inflammatory and chronic autoimmune disease and is a common cause of scalp scabs and discolored patches of skin on and around the scalp. It can also affect other parts of the ...
The dermis contains two vascular networks that run parallel to the skin surface—one superficial and one deep plexus—which are connected by vertical communicating vessels. [8] [11] The function of blood vessels within the dermis is fourfold: to supply nutrition, to regulate temperature, to modulate inflammation, and to participate in wound ...
A spider angioma or spider naevus (plural: spider naevi), also nevus araneus, is a type of telangiectasis [2] (swollen, spider-like blood vessels on the skin) found slightly beneath the skin's surface, often containing a central red spot and deep reddish extensions (see Blood color) which radiate outwards like a spider's web or a spider's legs.
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 ().