is a rare testicular tumor causing painless swelling; sometimes producing estrogen.

is a rare vaginal soft-tissue cancer from immature muscle cells in adults.

is a rare benign skin disorder causing yellow-orange nodules, usually solitary.

is a late-onset condition causing coordination problems (ataxia) and widespread nerve damage.

is a rare inherited white-matter disease causing progressive movement and thinking problems.

is an autosomal recessive, adult-onset disorder causing progressive coordination and balance problems.

is a rare genetic anemia starting in adulthood with ring sideroblasts.

is a genetic movement disorder causing involuntary neck contractions and abnormal postures.

is a mitochondrial disorder causing progressive eye muscle weakness and ptosis.

is a genetic muscle disorder from VCP mutations, causing adult distal weakness.

is a movement disorder causing dystonia and parkinsonism (Parkinson-like symptoms) in adults.

is a retinal disease causing gradual central vision loss and distortion.

is a rare adult immune disorder causing severe infections, especially nontuberculous mycobacteria.

is a rare mitochondrial disease causing progressive muscle weakness and fatigue.

is an autoimmune disease causing fluctuating muscle weakness, worse with activity.

is a late-onset muscle disease causing progressive weakness and breathing problems.

is chronic airway inflammation starting in adulthood, with frequent, hard-to-control symptoms.

is a genetic, multisystem condition causing muscle weakness, myotonia, and fatigue.

is a rare inflammatory disorder causing high fevers, rash, and joint pain.

is a rare autoinflammatory disease causing high fevers, rash, joint pain.

is a urea cycle disorder causing high ammonia (hyperammonemia) and neuropsychiatric crises.

is a circadian rhythm disorder causing very early sleep and wake.

is a circadian rhythm disorder causing unusually early sleep and wake times.

is a circadian rhythm disorder causing very early sleep-wake timing, often genetic.