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People generally only develop one or two patches of neurodermatitis. It is possible to have more than that, but it's rare, the AAD explains. The back of the neck is one of the most common spots to ...
Cherry angioma, also called cherry hemangioma [1] or Campbell de Morgan Spot, [2] is a small bright red dome-shaped bump on the skin. [3] It ranges between 0.5 – 6 mm in diameter and usually several are present, typically on the chest and arms, and increasing in number with age.
Red lunulae is characterized by a dusky erythema confined to the lunulae, as has been reported in association with alopecia areata. [ 1 ] : 791 It is most commonly seen on the thumbnail. Signs and symptoms
The four pigments in a bird's cone cells (in this example, estrildid finches) extend the range of color vision into the ultraviolet. [1]Tetrachromacy (from Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cell in the eye.
This story was originally published on February 2, 2022, and most recently updated on February 4, 2025. Read the original article on Business Insider Related articles
Dermatitis herpetiformis (DH) is a chronic autoimmune blistering skin condition, [3] characterised by intensely itchy blisters filled with a watery fluid. [4] DH is a cutaneous manifestation of coeliac disease, [5] although the exact causal mechanism is not known.
Children (defined as ages 2 to 18) are most often exposed to red 40 through products including cereal, juice, soda and ice cream, according to a 2016 study in the journal Food Additives ...
The Fitzpatrick scale has been criticized for its Eurocentric bias and insufficient representation of global skin color diversity. [9] The scale originally was developed for classifying "white skin" in response to solar radiation, [2] and initially included only four categories focused on white skin, with "brown" and "black" skin types (V and VI) added as an afterthought.