You searched for: “trichatrophia”
trichatrophia (s) (noun) (no pl)
Atrophy of the hair-growing parts: Jane's dermatologist told her that she had a case of trichatrophia causing an atrophy of the hair bulbs, with brittleness, splitting, and the falling out of her hair.

Atrophy is the wasting away, deterioration, or diminution resulting from disease, injury, or lack of use.