 [ Symptoms ] how do you cure bacterial stds [ Disease ] the signs of hair loss include in men thinning hair on the scalp a receding hairline or a horseshoe shaped pattern that leaves the crown of the head exposed in women thinning of hair in general but mainly at the crown complete balding is rare in children or young adults sudden loss of patches of hair known as alopecia areata complete loss of all hair on the body a rare disease called alopecia universalis especially in children patches of broken hairs and incomplete hair loss usually on the scalp but sometimes involving the eyebrows the child is most likely rubbing or pulling out hair a condition called trichotillomania excessive shedding of hair but not complete baldness after various illnesses and drug treatments rapid weight loss anemia stress or pregnancy a condition known as telogen effluvium