Down syndrome - Symptoms and causes - Mayo Clinic
Nov 12, 2024 · Down syndrome is a genetic condition caused when an unusual cell division results in an extra full or partial copy of chromosome 21. This extra genetic material causes the developmental …
Sjogren's syndrome - Symptoms and causes - Mayo Clinic
Aug 2, 2022 · Sjogren's (SHOW-grins) syndrome is a disorder of your immune system identified by its two most common symptoms — dry eyes and a dry mouth. The condition often accompanies other …
Stiff Person Syndrome Clinic - Overview - Mayo Clinic
Nov 8, 2025 · The Stiff Person Syndrome Clinic brings together medical experts in neurological conditions and advanced diagnostic testing to arrive at the right diagnosis and a course of action.
Ehlers-Danlos syndrome - Symptoms and causes - Mayo Clinic
Aug 25, 2022 · Ehlers-Danlos syndrome is a group of inherited disorders that affect your connective tissues — primarily your skin, joints and blood vessel walls. Connective tissue is a complex mixture …
Bardet-Biedl syndrome (BBS) - Symptoms and causes - Mayo Clinic
Overview Bardet-Biedl (BAR-day, BEE-dul) syndrome, also called BBS, is a rare condition caused by changes in genes. BBS can affect almost any part of the body. Starting in early childhood, extra …
Mayo Clinic uncovers brain cell changes that could explain Tourette ...
Apr 17, 2025 · Nearly 1 in 162 children in the U.S. have Tourette syndrome, according to the Centers for Disease Control. While genetic studies have identified some risk genes, the biological mechanisms …
Guillain-Barre syndrome - Symptoms and causes - Mayo Clinic
Jun 7, 2024 · Guillain-Barre syndrome is rare, and the exact cause is not known. But two-thirds of people have symptoms of an infection in the six weeks before Guillain-Barre symptoms begin.
Restless legs syndrome - Mayo Clinic Press
Dec 13, 2024 · Also known as Willis-Ekbom disease, restless legs syndrome usually occurs in the evening or at night when a person has been sitting or lying down. People describe it as unpleasant …
Cushing syndrome - Symptoms and causes - Mayo Clinic
Jun 7, 2023 · Cushing syndrome happens when the body has too much of the hormone cortisol for a long time. This can result from the body making too much cortisol, or from taking medicines called …
Bardet-Biedl syndrome (BBS) - Diagnosis and treatment - Mayo Clinic
Living with Bardet-Biedl syndrome can be a challenge for people with BBS and their families. Sharing your feelings with trusted family and friends or with healthcare professionals can help.