Alopecia areata, also known as spot baldness, is an autoimmune disease in which hair is lost from some or all areas of the body. source
Alopecia areata, also known as spot baldness, is an autoimmune disease in which hair is lost from some or all areas of the body.
Often Alopecia areata, results in bald spots on the scalp, especially in the first stages. source
Often Alopecia areata, results in bald spots on the scalp, especially in the first stages.
In 1–2% of cases, the condition can spread to the entire scalp (alopecia totalis) or to the entire skin (alopecia universalis). source
In 1–2% of cases, the condition can spread to the entire scalp (alopecia totalis) or to the entire skin (alopecia universalis).
There are two types: scarring alopecia, where there is fibrosis, inflammation, and loss of hair follicles, and (2) nonscarring alopecia. source
There are two types: scarring alopecia, where there is fibrosis, inflammation, and loss of hair follicles, and (2) nonscarring alopecia.
Conditions resembling alopecia areata, and having a similar cause, occur also in other species. source
Conditions resembling alopecia areata, and having a similar cause, occur also in other species.
Typical first symptoms of alopecia areata are small bald patches. source
Typical first symptoms of alopecia areata are small bald patches.
Alopecia areata most often affects the scalp and beard, but may occur on any part of the body with hair. source
Alopecia areata most often affects the scalp and beard, but may occur on any part of the body with hair.
Alopecia areata is common in children. source
Alopecia areata is common in children.
Alopecia areata is thought to be a systemic autoimmune disorder in which the body attacks source
Alopecia areata is thought to be a systemic autoimmune disorder in which the body attacks
Alopecia areatas own anagen hair follicles and suppresses or stops hair growth. source
Alopecia areatas own anagen hair follicles and suppresses or stops hair growth.
Alopecia areata is not contagious. source
Alopecia areata is not contagious.
Alopecia areata occurs more frequently in people who have affected family members, suggesting heredity may be a factor. source
Alopecia areata occurs more frequently in people who have affected family members, suggesting heredity may be a factor.
Endogenous retinoids metabolic defect is a key part of the pathogenesis of the alopecia areata. source
Endogenous retinoids metabolic defect is a key part of the pathogenesis of the alopecia areata.
In 2010, a genome-wide association study was completed that identified 129 single nucleotide polymorphisms that were associated with alopecia areata. source
In 2010, a genome-wide association study was completed that identified 129 single nucleotide polymorphisms that were associated with alopecia areata.
Alopecia areata is usually diagnosed based on clinical features. source
Alopecia areata is usually diagnosed based on clinical features.
Commonly, alopecia areata involves hair loss in one or more round spots on the scalp. source
Commonly, alopecia areata involves hair loss in one or more round spots on the scalp.
Hair may also be lost more diffusely over the whole scalp, in which case the condition is called diffuse alopecia areata. source
Hair may also be lost more diffusely over the whole scalp, in which case the condition is called diffuse alopecia areata.
Alopecia areata monolocularis describes baldness in only one spot. source
Alopecia areata monolocularis describes baldness in only one spot.
