Diagnosaurus
- Ulcer, leg
- Ulcerative colitis
- Ulcer disease, peptic
- Ulcers, decubitus
- Upper airway obstruction
- Upper extremity ischemia
- Upper GI bleeding
- Upper lobe lung disease
- Upper respiratory tract infection
- URI
- Uric acid increased, endogenous
- Urinary calculi
- Urinary incontinence
- Urinary problems
- Urinary tract infection
- Urinary tract obstruction
- Urticaria, cold
- Urticaria (hives)
- Uterine leiomyomas (fibroids)
- Uveitis