Ua
- UAC (see: Umbilical catheters )(Special Topic)
 
Ud
- UDP-galactose-4 (see: Galactosemia)(Condition)
 
Ul
- Ulcer - aphthous (see: Canker sore)(Condition)
 - (Condition)
 - (Alt. Medicine)
 - (In-Depth)
 - Ulcerative esophagitis (see: Esophagitis)(Condition)
 - Ulcerative proctitis (see: Ulcerative colitis)(Condition)
 - Ulcerative proctitis - InDepth (see: Ulcerative colitis - InDepth)(In-Depth)
 - Ulnar claw (see: Claw hand)(Symptoms)
 - Ulnar nerve dysfunction - claw hand (see: Claw hand)(Symptoms)
 - Ulnar nerve palsy - claw hand (see: Claw hand)(Symptoms)
 
Um
- (Special Topic)
 - Umbilical cord blood transplant (see: Bone marrow transplant)(Surgery)
 - Umbilical cord blood transplant - discharge (see: Bone marrow transplant - discharge)(Discharge)
 - (Special Topic)
 - (Condition)
 - (Surgery)
 - Umbilical hernia surgery (see: Umbilical hernia repair)(Surgery)
 - Umbilical herniorrhaphy (see: Umbilical hernia repair)(Surgery)
 
Un
- Uncertain genitalia (see: Ambiguous genitalia)(Symptoms)
 - Uncircumcised penis - bathing (see: Penis care (uncircumcised))(Special Topic)
 - Unconjugated bilirubin - blood (see: Bilirubin blood test)(Medical Test)
 - Uncoordinated movement (see: Movement - uncoordinated)(Symptoms)
 - Underactive thyroid - InDepth (see: Hypothyroidism - InDepth)(In-Depth)
 - Underbite (see: Prognathism)(Symptoms)
 - Underbite (see: Malocclusion of teeth)(Condition)
 - (Condition)
 - (Surgery)
 - Unformed bowel movements (see: Diarrhea)(Symptoms)
 - Unguis incarnates (see: Ingrown toenail)(Condition)
 - Unguis incarnatus (see: Ingrown toenail)(Condition)
 - Univentricular heart (see: Double inlet left ventricle )(Condition)
 - Univentricular heart of the left ventricular type (see: Double inlet left ventricle )(Condition)
 
Up
- UP junction obstruction (see: Ureteropelvic junction obstruction)(Condition)
 - Upper gastrointestinal bleeding (see: Black or tarry stools)(Symptoms)
 - Upper respiratory illness - RSV (see: Respiratory syncytial virus (RSV))(Condition)
 - Upper respiratory infection - viral (see: Common cold)(Condition)
 - Upper respiratory infection - viral - InDepth (see: Colds and the flu - InDepth)(In-Depth)
 - Upper respiratory infection - what to ask your doctor - child (see: Colds and the flu - what to ask your doctor - child)(Doctor Questions)
 - Upset stomach - viral (see: Viral gastroenteritis (stomach flu))(Condition)
 
Ur
- (Condition)
 - (Condition)
 - Urethral meatal stenosis (see: Meatal stenosis)(Condition)
 - Urethral obstruction malformation sequence (see: Prune belly syndrome)(Condition)
 - Urethroplasty (see: Hypospadias repair)(Surgery)
 - URI - RSV (see: Respiratory syncytial virus (RSV))(Condition)
 - URI - what to ask your doctor - child (see: Colds and the flu - what to ask your doctor - child)(Doctor Questions)
 - (Special Topic)
 - Urinary catheter - neonatal (see: Urinary catheter - infants)(Special Topic)
 - (Doctor Questions)
 - (Condition)
 - (In-Depth)
 - (Symptoms)
 - (Symptoms)
 - Urine amino acids (see: Aminoaciduria)(Medical Test)
 - (Medical Test)
 - Urine culture - catheterization (see: Urine culture - catheterized specimen)(Medical Test)
 - (Medical Test)
 - Uropathy - obstructive (see: Obstructive uropathy)(Condition)
 - Urticaria (see: Hives)(Condition)
 - Urticaria - antihistamine (see: Antihistamines for allergies)(Self-Care)
 - Urticaria - hives (see: Hives)(Condition)
 - (Condition)
 
Us
- Using a humidifier for colds (see: Humidifiers and health)(Special Topic)
 - (Self-Care)
 - (Doctor Questions)
 
Ut
- UTI - children (see: Urinary tract infection - children)(Condition)
 - UTI - InDepth (see: Urinary tract infection - InDepth)(In-Depth)
 - UTIs - InDepth (see: Urinary tract infection - InDepth)(In-Depth)
 
Uv
- UVC (see: Umbilical catheters )(Special Topic)
 - (Condition)
 



