My eyebrows fall out and don't grow back i don't think i have alopecia cause they're not fully gone get but they are very sparse what's wrong with me?

Scalp hair?: You did not comment on how much hair you have on your scalp. The problem with your eyebrows maybe due to thyroid disease. I would see a dermatologist or an endocrinologist to determine what the problem is. You could also have alopecia areata in your eyebrows.

Alopecia Areata: You may have a condition called alopecia areata. Treatment is cortisone shots in your eyebrow. See your dermatologist for help.