Which condition refers to hair loss in circular patches?

Alopecia areata is characterized by hair loss in circular patches on the scalp or other areas of the body. This autoimmune condition occurs when the immune system mistakenly attacks hair follicles, leading to sudden and patchy hair loss. It can affect individuals of all ages and can sometimes resolve on its own, although it may also recur. Understanding this condition is important for cosmetologists, as they may encounter clients experiencing hair loss and can provide supportive services or recommendations.

In contrast, alopecia totalis involves complete loss of hair on the scalp, rather than patches, while telogen effluvium describes temporary hair shedding due to stress or hormonal changes, not localized patches. Androgenetic alopecia refers to hereditary hair loss that typically presents as a diffuse thinning or receding hairline rather than round patches. This distinction is crucial for professionals in the field to correctly identify and address various types of hair loss.