Mutilating hereditary sensory neuropathy with spastic paraplegia

Mutilating hereditary sensory neuropathy with spastic paraplegia is an extremely rare genetic disorder that combines two major neurological features: a severe sensory neuropathy leading to progressive mutilation of the extremities, and spastic paraplegia affecting the lower limbs. The sensory neuropathy component results in a profound loss of pain and temperature sensation, particularly in the hands and feet. Because affected individuals cannot feel injuries, they are prone to recurrent wounds, infections, and progressive tissue damage (ulcerations, osteomyelitis, and eventual auto-amputation of digits), which is referred to as the "mutilating" aspect of the disease. The spastic paraplegia component involves progressive stiffness and weakness of the legs due to upper motor neuron dysfunction, leading to difficulty walking and impaired mobility. The condition primarily affects the peripheral nervous system (sensory nerves) and the central nervous system (corticospinal tracts). Clinical features typically include distal sensory loss, acromutilation, trophic ulcers of the feet, lower limb spasticity, hyperreflexia, and extensor plantar responses. Some patients may also develop urinary disturbances. The disease is progressive, and management is largely supportive, focusing on prevention of injuries and infections through meticulous foot care and wound management, orthopedic interventions when needed, and physical therapy to address spasticity. Antispasticity medications such as baclofen may be used to manage lower limb stiffness. There is currently no curative treatment available for this condition.

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