Index of suspicion.
D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006996:Hypocalcemia / Q000209:etiology; D007223:Infant; D017116:Low Back Pain / Q000209:etiology; D008297:Male; D011697:Purpura, Thrombotic Thrombocytopenic / Q000175:diagnosis* / Q000628:therapy; D012185:Retroperitoneal Fibrosis / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D012279:Rickets / Q000175:diagnosis* / Q000628:therapy; D013746:Tetany / Q000209:etiology