Conditions
Stable Angina
Stable angina is a type of chest pain or discomfort that occurs when your heart muscle doesn't get enough oxygen-rich blood. It is a…
Squamous Intraepithelial Lesion
Squamous intraepithelial lesion (SIL) refers to abnormal cell changes found on the surface of certain organs, most commonly the cervix. It is not cancer…
Sports Hernia
A sports hernia, also known as athletic pubalgia, is a painful injury to the soft tissues in your lower abdomen and groin. Unlike a…
Spondyloarthritis
Spondyloarthritis is a group of inflammatory diseases that mainly affect the spine and large joints, but can also impact other body parts like the…
Spindle Cell Sarcoma
Spindle cell sarcoma is a rare type of cancer that forms in the body's soft tissues, such as fat, muscle, nerves, or blood vessels.…
Spina Bifida Occulta
Spina bifida occulta is the mildest and most common form of spina bifida, a birth defect where there is a small gap in the…
Spina Bifida
Spina bifida is a birth defect where a baby's spinal cord and backbone do not fully form or close during early pregnancy. It is…
Sphincter of Oddi Dysfunction
Sphincter of Oddi Dysfunction (SOD) occurs when a small muscle valve, called the sphincter of Oddi, does not open and close correctly. This valve…
Sphenoid Sinus
The sphenoid sinus is one of four pairs of air-filled spaces located deep within your skull, behind your eyes and nose. When this sinus…
Spasmodic Dysphonia
Spasmodic dysphonia is a rare, chronic neurological disorder that causes involuntary spasms of the voice box (larynx) muscles. These spasms make your voice sound…
Sleepwalking
Sleepwalking (somnambulism) is a sleep disorder where a person gets out of bed and performs various activities while still deeply asleep. It usually happens…
Sixth Nerve Palsy
Sixth nerve palsy is a condition where the sixth cranial nerve, which controls the muscle that moves your eye outward, is damaged. This damage…
Wrist Blood Pressure
Wrist blood pressure monitors measure your blood pressure at your wrist instead of your upper arm. These devices are often used by people who…
White Coat Syndrome
White coat syndrome is a condition where your blood pressure (BP) reading is higher when taken in a medical setting, like a doctor's office,…
West Nile Virus
West Nile virus is a common virus spread to humans through the bite of an infected mosquito. Most people who get West Nile virus…
Waldenstrom Macroglobulinemia
Waldenstrom macroglobulinemia (WM) is a rare, slow-growing cancer of certain white blood cells called B lymphocytes, primarily found in the bone marrow. These abnormal…
Vitamin K Deficiency
Vitamin K deficiency happens when your body doesn't have enough vitamin K, a nutrient vital for blood clotting and strong bones. While rare in…
Vertebral Artery Dissection
Vertebral artery dissection is a serious condition where a tear occurs in the wall of one of the vertebral arteries, which are major blood…
Vascular Ehlers-Danlos Syndrome
Vascular Ehlers-Danlos Syndrome (vEDS) is a rare genetic disorder that weakens the body's connective tissue, especially in blood vessels and internal organs. It is…
Vascular Dementia
Vascular dementia is the second most common type of dementia, caused by reduced blood flow to the brain, which damages brain tissue. This can…
Valley Fever
Valley Fever (coccidioidomycosis) is a lung infection caused by inhaling tiny fungal spores found in the soil of specific dry, dusty regions, primarily in…
Vaginal Cancer
Vaginal cancer is a rare type of cancer that begins in the vagina, the muscular tube connecting the uterus to the outside of the…
VATER Syndrome
VATER syndrome is a rare condition where a baby is born with a specific group of birth defects that often occur together. These defects…
Urothelial Carcinoma
Urothelial carcinoma is a type of cancer that begins in the cells lining the urinary tract, called urothelial cells. These cells are found in…