
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 …
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 …
Stiff Person Syndrome Clinic - Overview - Mayo Clinic
Nov 8, 2025 · Get care from experts in stiff person syndrome, also called SPS, a disorder that causes worsening muscle rigidity and spasms over time.
Mayo Clinic uncovers brain cell changes that could explain …
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 …
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 …
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, …
Guillain-Barre syndrome - Symptoms and causes - Mayo Clinic
Jun 7, 2024 · Guillain-Barre syndrome is a serious condition that requires immediate hospitalization because it can worsen quickly. The sooner treatment is started, the better the …
Serotonin syndrome - Symptoms & causes - Mayo Clinic
Sep 12, 2024 · Serotonin syndrome can occur when you increase the dose of certain medications or start taking a new drug. It's most often caused by combining medications that contain …
Bardet-Biedl syndrome (BBS) - Diagnosis and treatment - Mayo …
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.
Understanding Parsonage-Turner syndrome and hereditary …
Jun 5, 2025 · Today, clinicians and researchers refer to this rare condition as either Parsonage-Turner syndrome (PTS) or neuralgic amyotrophy. To mark the 75th anniversary of the original …