PSI Barbering Practice Exam

Which condition is characterized by an autoimmune response leading to hair loss?

1. Alopecia senilis

2. Alopecia areata

3. Alopecia totalis

4. Alopecia universalis

The correct answer is: Alopecia areata

Alopecia areata is indeed characterized by an autoimmune response that leads to hair loss. In this condition, the immune system mistakenly targets hair follicles, resulting in sudden and patchy hair loss. The exact mechanism behind this autoimmune reaction is not fully understood, but it is believed to involve genetic factors and environmental triggers that can provoke the immune response. Alopecia senilis refers to hair loss related to aging, which is a natural process that does not involve an autoimmune response. Alopecia totalis is a more advanced form of alopecia areata, where total loss of hair on the scalp occurs, and alopecia universalis is an even more extensive form, resulting in the loss of all body hair, including eyebrows and eyelashes. While totalis and universalis are also autoimmune conditions, they are specific variations of alopecia areata, which is the primary answer to the question.