Hereditary sensory and autonomic neuropathy, type 2 (HSAN2) is an inherited disorder characterized by profound and universal sensory loss involving large and small fiber nerves, and marked hypotonia. The disease is Monarch Disease Ontology entry MONDO_0019941 (hereditary sensory and autonomic neuropathy type 2). Also known as: HSAN2, Hereditary Sensory and Autonomic Neuropathy Type II, autosomal recessive sensory radicular neuropathy, hereditary sensory and autonomic neuropathy type II, neurogenic acroosteolysis.