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Have dark skin. People with darker skin pigmentation produce less vitamin D naturally in response to sunlight. If you’re Black or Hispanic, you may have a higher risk of developing vitamin D ...
Acral lentiginous melanoma is the most common subtype in people with darker skins and is rare in people with lighter skin types. [ 7] It is not caused by exposure to sunlight or UV radiation, and wearing sunscreen does not protect against it. Acral lentiginous melanoma is commonly found on the palms, soles, under the nails, and in the oral mucosa.
Xeroderma pigmentosum ( XP) is a genetic disorder in which there is a decreased ability to repair DNA damage such as that caused by ultraviolet (UV) light. [ 1] Symptoms may include a severe sunburn after only a few minutes in the sun, freckling in sun-exposed areas, dry skin and changes in skin pigmentation. [ 1]
Anagen effluvium is the pathologic loss of anagen or growth-phase hairs. Classically, it is caused by radiation therapy to the head and systemic chemotherapy, especially with alkylating agents. [1] [2] : 753–4. Anagen effluvium is due to an acute injury to the hair follicles by an endogenous or exogenous cause, resulting in sudden diffuse ...
The cause of male-pattern hair loss is a combination of genetics and male hormones; the cause of female pattern hair loss is unclear; the cause of alopecia areata is autoimmune; and the cause of telogen effluvium is typically a physically or psychologically stressful event. [4] Telogen effluvium is very common following pregnancy. [4]
As you can guess, each type of hair loss has its own causes. Broadly speaking, the different types of hair loss can be broken down into two categories: non-scarring alopecia and scarring alopecia ...
Alopecia areata, also known as spot baldness, is a condition in which hair is lost from some or all areas of the body. [ 12][ 1] It often results in a few bald spots on the scalp, each about the size of a coin. [ 7] Psychological stress and illness are possible factors in bringing on alopecia areata in individuals at risk, but in most cases ...
What probably comes to mind when you think of hair loss, or alopecia, is an older man with a receding hairline and a bald spot on the top of his head. But from male pattern baldness to hair loss ...