Search results
Results from the WOW.Com Content Network
Acanthosis nigricans is a medical sign characterised by brown-to-black, poorly defined, velvety hyperpigmentation of the skin. [1] It is usually found in body folds, [2] such as the posterior and lateral folds of the neck, the armpits, groin, navel, forehead and other areas.
The causes of this condition have not yet been completely defined. [3] Patients are usually older persons. [4] The correlation of notalgia paresthetica localization with corresponding degenerative changes in the spine suggests that spinal nerve impingement may be a contributing cause. According to Plete and Massey, "The posterior rami of spinal ...
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 ...
Small, itchy bumps: These may be red, white, or yellow and can appear around the hair follicles. They can be mistaken for acne . Pain or tenderness: The affected areas might be sore or painful to ...
A dermatoscope must be used to detect "ugly ducklings" among those with light skin or blonde/red hair. People with a personal or family history of skin cancer or of dysplastic nevus syndrome (multiple atypical moles) should see a dermatologist at least once a year to be sure they are not developing melanoma.
Keratosis pilaris (KP; also follicular keratosis, lichen pilaris, or colloquially chicken skin. [1]) is a common, autosomal-dominant, genetic condition of the skin's hair follicles characterized by the appearance of possibly itchy, small, gooseflesh-like bumps, with varying degrees of reddening or inflammation. [2]
Being open to the air causes oxidation of the melanin pigment, which turns it black. [9] [2] Cutibacterium acnes is the suspected infectious agent in acne. [3] It can proliferate in sebum and cause inflamed pustules (pimples) characteristic of acne. [3] Nodules are inflamed, painful, deep bumps under the skin. [3]
It is known that the stress hormone cortisol accumulates in human hair over time, but whether this has any effect on hair color has not yet been resolved. [15] A 2020 paper, published in the journal Nature reported that stress can cause hair to lose its pigment. An overactive immune response can destroy melanocytes and melanocyte stem cells in ...