| FIDD | fetal iodine deficiency disorder |
|---|---|
| GAD | generalized anxiety disorder; glutamic acid decarboxylase |
| GMCD | grand mal convulsive disorder |
| HID | headache, insomnia, depression [syndrome]; herniated intervertebral disc; human infectious dose; hyp... |
| IAHD | idiopathic acquired hemolytic disorder |