Alopecia areata is an autoimmune disease that causes hair loss. In other words, your immune system is attacking the cells in your hair follicles! This creates hair loss in patches that are almost perfect circles. How big the patch of hair loss varies from person to person. The most common place to lose hair from AA is on the scalp. Although, some people may lose hair in their eyebrows, beards, & even eyelashes. Hair has been known to grow back spontaneously within the first year for 80% of patients. It's common to have alopecia areata as a kid, have it go away and then come back in maybe 20 years. The good news? Alopecia areata is reversible, treatable, and isn't permanent. You can reverse alopecia even through natural treatments. Preventing alopecia areata starts with managing stress, eating a high anti-inflammatory diet, avoiding excess alcohol and sugar, and ditching cigarettes.