Question: What is (are) Troyer syndrome ?
Answer: Troyer syndrome is a neurological disorder and one of the many types of hereditary spastic paraplegia. Signs and symptoms typically begin in early childhood and may include progressive muscle weakness and stiffness (spasticity) in the legs; muscle wasting in the hands and feet; paraplegia; leg contractures; developmental delays; speech difficulty; mood swings; and short stature. Symptoms worsen over time, with most people needing a wheelchair by their 50s or 60s. Life expectancy is normal. Troyer syndrome is caused by mutations in the SPG20 gene and is inherited in an autosomal recessive manner. Treatment is symptomatic and supportive.
Source: GARD