See Conditions by First Letter (U)
- Ulcer
- Ulcerative Proctitis
- Ulna Fractures
- Ulnar Nerve Compression Syndromes
- Ulnar Neuropathies
- Unconsciousness
- Unverricht-Lundborg Disease
- Unverricht-Lundborg Syndrome
- Upper Extremity Deep Vein Thrombosis
- Urachal Cancer
- Urea Cycle Disorders
- Urea Cycle Disorders, Inborn
- Ureaplasma Infections
- Uremia
- Ureteral Calculi
- Ureteral Diseases
- Ureteral Neoplasms
- Ureteral Obstruction
- Ureterolithiasis
- Urethral Cancer
- Urethral Neoplasms
- Urethral Stricture
- Urethritis
- Urinary Bladder Calculi
- Urinary Bladder Diseases
- Urinary Bladder Neck Obstruction
- Urinary Bladder Neoplasms
- Urinary Bladder, Neurogenic
- Urinary Bladder, Overactive
- Urinary Calculi
- Urinary Incontinence
- Urinary Incontinence, Stress
- Urinary Incontinence, Urge
- Urinary Retention
- Urinary Tract Infections
- Urination Disorders
- Urogenital Abnormalities
- Urogenital Neoplasms
- Urolithiasis
- Urologic Diseases
- Urologic Neoplasms
- Urological Manifestations
- Urticaria
- Urticaria Pigmentosa
- Usher Syndrome Type 3
- Usher Syndrome, Type 1
- Usher Syndromes
- Usual Interstitial Pneumonia
- Uterine Cervical Diseases
- Uterine Cervical Dysplasia
- Uterine Cervical Incompetence
- Uterine Cervical Neoplasms
- Uterine Cervicitis
- Uterine Diseases
- Uterine Hemorrhage
- Uterine Inertia
- Uterine Neoplasms
- Uterine Perforation
- Uterine Prolapse
- Uterine Rupture
- Uterine Sarcoma
- Uveal Diseases
- Uveal Neoplasms
- Uveitis
- Uveitis, Anterior
- Uveitis, Intermediate
- Uveitis, Posterior
- Uveomeningoencephalitic Syndrome