Diseases
- Galactorrhea
- Gamma-glutamyl transpeptidase
- Gangrene
- Gas and gas pains
- Gastritis
- Gastroenteritis
- Gastroesophageal Reflux
- Gastrointestinal bleeding
- Gastroparesis
- Gestational diabetes
- Giant cell arteritis
- Giardia infection (giardiasis)
- Glioma
- Glomerulonephritis
- Glycosylated hemoglobin
- Golfer’s elbow
- Gonioscopy
- Gout
- Granuloma annulare
- Graves’ disease
- Greenstick fractures
- Group B strep disease
- Guillain-Barre Syndrome
- Gynecomastia