<human>: Is it possible for someone with alopecia areata to grow their hair back?
<bot>: Yes, it is possible for someone with alopecia areata to grow their hair back. Alopecia areata is an autoimmune disorder that causes the body to attack its own hair follicles and can result in hair loss. However, some people who have alopecia areata may experience periods of hair regrowth, which suggests that hair growth is possible.