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What is a urinary tract infection (UTI)? A urinary tract infection (UTI) is an infection in the urinary tract. The urinary tract includes the kidneys, the bladder and the urethra. The kidneys are 2...

What is vaginal discharge? Glands inside your vagina and cervix make small amounts of fluid. This fluid flows out of the vagina each day, carrying out old cells that have lined the vagina. Vaginal ...

What is vision loss? Vision loss is losing your ability to see well without some sort of vision correction. Vision correction tools include eyeglasses, contact lenses, permanent artificial lenses, ...

What is vomiting and diarrhea? Vomiting (throwing up) and diarrhea (watery bowel movements) are common symptoms of gastroenteritis. Gastroenteritis is the inflammation and irritation of the stomach...

What is vulvodynia? Vulvodynia is the word that describes pain and discomfort in the vulva. The vulva is a woman’s external genital area, or the area around the opening to the vagina. Symptoms of v...

What are warts? Warts are small growths on the skin that normally don’t cause pain. Some warts itch and may hurt, especially if they’re on your feet. There are five kinds of warts: Common warts usu...

What is Wolff-Parkinson-White syndrome? Wolff-Parkinson-White (WPW) syndrome is a heart condition. People who have WPW syndrome are born with an extra electrical pathway in their heart. It changes ...

What is stuttering? Stuttering is a condition that affects a person’s ability to speak smoothly. It can cause them to repeat words, parts of sentences, or sounds. Someone who stutters might prolong...

What is a sty? A sty is a painful, red bump that forms on the edge of your eyelid. It may look like an acne pimple. Sties may cause discomfort, but they are not usually serious and are easy to trea...

Substance use disorder can happen when some products aren’t used in the right way. This includes prescription medicines, over-the-counter medicines, recreational and illegal drugs, tobacco, and alc...