| OFHA | occipitofrontal headache |
|---|---|
| PDPH | postdural puncture headache |
| PLPH | post-lumbar puncture headache |
| PSH | past surgical history; postspinal headache |
| TH | tension headache; tetrahydrocortisol; T helper [cell]; theophylline; thorax; thrill; thyrohyoid; thy... |