title: Pica, paper, and pseudoporphyria.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D008607:Intellectual Disability / Q000150:complications; D008297:Male; D010209:Paper; D010842:Pica / Q000175:diagnosis*; D011164:Porphyrias / Q000175:diagnosis*