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.

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.

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 …

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 …

May 31, 2025 · Prader-Willi syndrome is a genetic condition associated with cognitive and behavioral symptoms, delays in development, chronic hunger, and low levels of growth hormone.

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 …

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 chance of a complete …

Oct 29, 2024 · Klinefelter syndrome is a common condition that results when a person assigned male at birth has an extra copy of the X sex chromosome instead of the typical XY.

Sep 19, 2025 · Antiphospholipid (AN-te-fos-fo-LIP-id) syndrome is a condition in which the immune system mistakenly makes antibodies that attack tissues in the body. These antibodies can cause …

Mar 8, 2024 · Angelman syndrome is a condition caused by a change in a gene, called a genetic change. Angelman syndrome causes delayed development, problems with speech and balance, …