is a nerve compression disorder causing pain, numbness, and arm weakness.

is a rare, life-threatening reaction to antipsychotic medicines causing fever and rigidity.

is a rare inherited brain signaling disorder caused by acetylcholine receptor changes.

is a genetic brain disorder caused by faulty calcium channels.

is a genetic nervous system disorder caused by a faulty chloride channel.

is an inherited brain signaling disorder caused by a GABA receptor defect.

is a rare inherited brain disorder caused by faulty glycine receptors.

is a rare inherited brain disorder caused by a potassium channel defect.

results from a genetic sodium-channel defect affecting brain nerve signaling.

are rare inherited disorders that affect brain development, movement, and learning.

is a genetic muscle and nerve disorder caused by faulty calcium channels.

is a genetic muscle disorder caused by a chloride channel defect.

is a genetic nerve and muscle disorder caused by potassium channel changes.

is a genetic muscle and nerve condition caused by ryanodine receptor changes.

is a genetic condition affecting sodium channels, causing muscle and nerve symptoms.

is a rare nerve disorder caused by lymphoma spreading into nerves.

is a usually benign nerve growth that can cause pain or numbness.

is a group of inherited disorders affecting metabolism and the brain.

is a rare inherited condition affecting brain development due to low serine.

is a group of disorders affecting muscles and the nerves controlling them.

is a genetic disorder affecting muscles and weakening the heart.

is a condition affecting nerve-muscle signaling, causing weakness and easy fatigue.

is an autoimmune disease affecting the optic nerves and spinal cord.

is an autoimmune disorder causing optic nerve and spinal cord inflammation.