title: Ichthyosis and osteopetrosis.
mesh_terms: D000505:Alopecia / Q000209:etiology; D005050:Etretinate / Q000627:therapeutic use; D006801:Humans; D007057:Ichthyosis / Q000150:complications* / Q000188:drug therapy; D008297:Male; D008875:Middle Aged; D010022:Osteopetrosis / Q000150:complications*
chemical_list: D005050:Etretinate