| AIPFP | acute idiopathic peripheral facial nerve palsy |
|---|---|
| AISA | acquired idiopathic sideroblastic anemia |
| AITP | autoimmune idiopathic thrombocytopenic purpura |
| CIDP | chronic idiopathic polyradiculopathy; chronic inflammatory demyelinating polyradiculoneuropathy |
| CIIP | chronic idiopathic intestinal pseudo-obstruction |