Issue by nini: Can gnats take in hair, what can they try to eat? I woke up with a bald spot in the back again of my head and I’m not positive if it’s alopecia areata or if a gnat ate my hair since I identified a gnat in my bald spot. Do you think it was just snooping in my bald place or if it ate my hair? Best answer: Response by fkn.excessiveyou happen to be likely bald, my son What do you believe? Reply below!