| HDR | high dose rate |
|---|---|
| HED | hereditary ectodermal dysplasia; hydrotropic electron-donor; hypohidrotic ectodermal dysplasia; unit... |
| HHD | high heparin dose; home dialysis; hypertensive heart disease |
| HID | headache, insomnia, depression [syndrome]; herniated intervertebral disc; human infectious dose; hyp... |
| HIMP | high-dose intravenous methylprednisolone |