A rare genetic peripheral neuropathy disorder due to gain-of-function mutations in voltage-gated sodium channels present in the small peripheral nerve fibers characterized by neuropathic pain of varying intensity (often beginning in the distal extremities and with a burning quality) associated with autonomic dysfunction (for example orthostatic dizziness, palpitations, dry eyes and mouth), abnormal quantitative sensory testing and reduction in intraepidermal nerve fiber density. Large fiber functions (such as normal strength, tendon reflexes and vibration sense) and nerve conduction studies are typically normal.

A rare genetic peripheral neuropathy disorder due to gain-of-function mutations in voltage-gated sodium channels present in the small peripheral nerve fibres characterised by neuropathic pain of varying intensity (often beginning in the distal extremities and with a burning quality) associated with autonomic dysfunction (for example orthostatic dizziness, palpitations, dry eyes and mouth), abnormal quantitative sensory testing and reduction in intraepidermal nerve fibre density. Large fibre functions (such as normal strength, tendon reflexes and vibration sense) and nerve conduction studies are typically normal.

Sodium channelopathy-related small fiber neuropathy

Sodium channelopathy-related small fibre neuropathy