title: Porphyria cutanea tarda and hyperkeratosis.
mesh_terms: D000428:Alcohol Drinking; D004890:Erythema; D005243:Feces / Q000032:analysis; D006801:Humans; D007642:Keratosis / Q000150:complications*; D008297:Male; D008875:Middle Aged; D011164:Porphyrias / Q000150:complications*; D011166:Porphyrins / Q000032:analysis / Q000097:blood / Q000652:urine
chemical_list: D011166:Porphyrins