Neuropathy hereditary sensory and autonomic type 1
Neuropathy hereditary sensory type 1
Type of disease: Rare conditions
Hereditary sensory neuropathy type 1 (HSN1) is a neurological condition characterized by nerve abnormalities in the legs and feet. Many people with this condition have tingling, weakness, and a reduced ability to feel pain and sense hot and cold. Some affected people do not lose sensation, but instead feel shooting pains in their legs and feet. As HSN1 progresses, sensory problems can affect the hands, arms, shoulders, and abdomen. In rare cases, people with this condition develop sensorineural hearing loss. Symptoms of HSN1 typically begin during a person’s teens or twenties and worsen over time. The condition may be caused by any of several genes, depending on the form of HSN1 a person has. For example, HSN type 1A is caused by mutations in the SPTLC1 gene. All forms of HSN1 are inherited in an autosomal dominant manner. If symptoms are treated properly, the condition does not appear to affect life expectancy.Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.