How does the autoimmune condition known as Alopecia Areata typically present itself on the scalp or body?
Answer
Smooth, coin-sized, circular patches of hair loss
Alopecia areata is characterized by the immune system mistakenly attacking the body's own hair follicles. This autoimmune assault results in a very distinct presentation. Instead of diffuse thinning or patterned recession, the loss manifests as localized areas that are completely bare of hair. These patches are specifically described as smooth and are typically coin-sized and circular in shape. While this condition often starts in these isolated patches, it carries the potential to escalate, sometimes progressing to alopecia totalis, which involves total scalp hair loss, or even alopecia universalis, which involves total body hair loss if the immune attack becomes widespread.

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