
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 …
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.
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) - 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.
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 …
Irritable bowel syndrome - Symptoms and causes - Mayo Clinic
Oct 11, 2024 · Irritable bowel syndrome (IBS) is a common condition that affects the stomach and intestines, also called the gastrointestinal tract. Symptoms include cramping, belly pain, bloating, …
POEMS syndrome - Symptoms and causes - Mayo Clinic
May 6, 2025 · POEMS syndrome is a rare blood disorder that damages nerves and affects other parts of the body. POEMS stands for symptoms of the condition. Symptoms may include weak legs, trouble …
Klinefelter syndrome - Symptoms and causes - Mayo Clinic
Oct 29, 2024 · Klinefelter syndrome occurs because of a random genetic change in the sperm or the egg. The risk of Klinefelter syndrome is not raised by anything parents do or don't do.
Lynch syndrome - Symptoms and causes - Mayo Clinic
Dec 2, 2025 · Lynch syndrome is a genetic condition that raises the risk of many types of cancer, especially colon cancer and endometrial cancer. It's an inherited condition, which means it's passed …