Birdshot retinochoroidopathy is a rare, long-lasting inflammation that affects the back of both eyes. The problem lives in two layers: the retina (the ...

Birdshot retinochoroiditis is a rare, long-lasting eye inflammation. It affects the back of the eye (the retina and the choroid). Doctors see many small, ...

Birdshot lesions” are many small, cream-colored spots in the deeper eye layers (the choroid and retina). They are usually oval and radiate out from the optic ...

Birdshot choroidal lesions are pale, oval or round spots deep in the back of the eye. They sit in the choroid, which is the layer that feeds the retina. These ...

Birdshot chorioretinitis is a rare, long-lasting (chronic) inflammation inside both eyes. It mainly affects the back of the eye: the choroid (the blood-vessel ...

Birdshot chorioretinopathy (BCR) is a rare, long-lasting inflammation inside both eyes. It affects the choroid (the blood-rich layer under the retina) and the ...

Bangstad syndrome is a very rare inherited disorder. It affects growth, movement, hormones, and several body systems from birth. Babies are usually small ...

Ataxia–diabetes–goiter–gonadal insufficiency syndrome—better known as Bangstad syndrome—is an extremely rare, inherited disorder first described in 1989. It ...

Bird-headed dwarfism with progressive ataxia, insulin-resistant diabetes, goiter, and primary gonadal insufficiency or Bangstad syndrome is a very rare ...

Microcephalic primordial dwarfism, Montreal type is an extremely rare genetic condition. Children have very short height that affects the whole body ...

Bird-headed dwarfism, Montreal type is an extremely rare, multi-system genetic disorder first described in Montreal in 1970. It causes very short stature ...

A bipartite talus (also called talus bipartitus or talus partitus) is a rare developmental variation of the ankle’s talus bone in which the talus forms in two ...

Late-onset multiple carboxylase deficiency is a rare, inherited problem of biotin (vitamin B7) use and recycling. Biotin is a helper for several enzymes called ...

Juvenile-onset multiple carboxylase deficiency (MCD) is an umbrella term for problems in the body’s biotin system. Biotin is a vitamin (vitamin B7) that helps ...

Biotinidase deficiency is a genetic condition that stops the body from recycling biotin, a B-vitamin that enzymes need to turn food into energy and to make ...

Thiamine-responsive encephalopathy is a brain disorder where a shortage of usable thiamine inside brain cells causes swelling and injury in key deep brain ...

Thiamine transporter-2 deficiency is a rare, inherited brain-energy disorder. It happens when a person inherits harmful changes (variants) in a gene called ...

Biotin- or Thiamine-Responsive Encephalopathy Type 2 (THMD2) is a rare, inherited brain energy problem. It happens because cells—especially in deep ...

Thiamine Metabolism Dysfunction Syndrome 2 (TMDS2) is a rare, inherited brain energy problem. Your nerve cells need vitamin B1 (thiamine) to make energy. In ...

Biotin-thiamine-responsive basal ganglia disease is a rare, inherited brain disorder. It damages deep movement-control centers in the brain called the basal ...