???? ???? ??? ??? ?? ??? ??? ???? ????,????,???? ?? ?? ??? ?? ?? ???? ??? ?? ? ?? ? ??? ??????. ?? ??? ????? ?????.Trichothiodystrophy, frequently called TTD, is often a exceptional inherited affliction that impacts lots of areas of the body. The hallmark of this problem is hair that's sparse and easily broken. [from MedlinePlus Genetics]Cholestero