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Contact dermatitis: The most common cause of itchy armpits, per Dr. Shamban, this happens when something touches your skin (i.e. a deodorant, fragrance, or detergent) and causes irritation. It ...
OTC skin protectants like zinc acetate, zinc carbonate, zinc oxide, and calamine can also help dry the oozing and weeping, while baking soda or colloidal oatmeal may help with the itch, the FDA ...
The possible causes of chronic itch go way beyond dry skin. The post 11 Things Your Itchy Skin Can Reveal About Your Health appeared first on Reader's Digest.
Skin allergies frequently cause rashes, or swelling and inflammation within the skin, in what is known as a "weal and flare" reaction characteristic of hives and angioedema. [ 30 ] With insect stings, a large local reaction may occur in the form of an area of skin redness greater than 10 cm in size that can last one to two days. [ 31 ]
A loss-of-function mutation of filaggrin causes loss of this lipid matrix and external moisturizing factors, subsequently leading to disruption of the skin barrier. The disrupted skin barrier leads to transdermal water loss (leading to the xerosis or dry skin commonly seen in AD) and antigen and allergen penetration of the epidermal layer. [ 33 ]
The exact mechanism of the condition is unknown. Some studies have suggested the itching occurs in response to increased fibrinolytic activity in the skin, [5] [6] inappropriate activation of the sympathetic nervous system, [7] increased activity of acetylcholinesterase, [8] [9] or an increase in mast cell degranulation that releases histamine and other chemicals into the body.
Dandruff is a symptom of seborrheic dermatitis, “an inflammatory skin condition that can cause itching, burning, scaling, and flakes and scales on the scalp,” she explains.
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 ...