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Variably Protease Sensitive Prionopathy
Variably protease sensitive prionopathy (VPSPr) is a rare, progressive neurodegenerative disorder caused by abnormal prion protein building up in the brain. It…
Varicocele
A varicocele is a group of enlarged veins in the scrotum, the skin sac that holds the testicles. It often develops on…
Varicose Veins
Varicose veins are enlarged, twisted veins close to the surface of the skin. They usually develop in the legs when one-way valves…
Vascular Surgery
Surgical and minimally invasive treatment for blood vessel conditions outside the heart.
Vasculitis
Vasculitis is inflammation of one or more blood vessels. Swelling can narrow or block blood flow, affecting tissues and organs supplied by…
Ventricular Septal Rupture
Ventricular septal rupture is a tear in the wall, or septum, between the heart’s two lower chambers. The tear allows blood to…
Ventricular Tachycardia
Ventricular tachycardia is an abnormally fast heart rhythm that starts in the heart’s lower chambers, called the ventricles. This ventricular arrhythmia can…
Viral Hepatitis
Viral hepatitis is inflammation of the liver caused by hepatitis viruses. The main types are hepatitis A, B, C, D and E.…
Vitamin A Deficiency
Vitamin A deficiency occurs when the body does not have enough vitamin A to support normal health. Vitamin A helps maintain vision,…
Vitamin B12 Deficiency
Vitamin B12 deficiency occurs when the body does not have enough vitamin B12 to support normal health. Inadequate B12 can impair red…
Vitamin D Blood Test
A vitamin D blood test measures the amount of vitamin D circulating in your blood. Clinicians use the result to assess vitamin…
Vitiligo
Vitiligo is an autoimmune condition in which the immune system damages or destroys melanocytes, the cells that make skin pigment. This causes…
Vocal Cord Nodules
Vocal Cord Nodules are noncancerous, thickened areas that develop on the vocal folds inside the larynx. They can prevent the vocal folds…
Vomiting
Vomiting is the forceful emptying of stomach contents through the mouth. It happens when signals involving the brain, stomach, and digestive tract…
Water Intoxication
Water intoxication, also called water poisoning or water toxicity, occurs when a person drinks or retains more water than the body can…
Watery Eyes
Watery eyes, also called epiphora, happen when the eyes produce more tears than usual or when tears cannot drain normally. A thin…
Wbc Blood Test
A WBC blood test measures the number of white blood cells in a blood sample. It may be ordered on its own…
Weight Gain
Weight gain means an increase in body mass. It may come from fat, muscle, pregnancy, or other body tissues, but it can…
Wheezing
Wheezing is a high-pitched, whistling, or musical wheezing sound that happens when air moves through narrowed or inflamed airways. It may be…
Whooping Cough
Whooping cough is a contagious bacterial respiratory illness caused by Bordetella pertussis, which infects the airways. It can affect people of any…
Wilms Tumor
Wilms tumor, also called nephroblastoma, is a rare cancer that usually begins in one kidney in young children. It is one of…
Wolff-Parkinson-White Syndrome
Wolff-Parkinson-White syndrome, also called WPW syndrome, is a heart rhythm condition caused by an extra electrical connection in the heart. This accessory…
Worster-Drought Syndrome
Worster-Drought syndrome is a congenital or early-developmental neurological disorder that affects control of the muscles used for speech, swallowing, and other movements…
X-Linked Ichthyosis
X-linked ichthyosis is an inherited skin condition that causes dry, persistent scaling. It happens when changes affecting the steroid sulfatase (STS) gene…
