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A form of spastic paraplegia, a neurodegenerative disorder characterized by a slow, gradual, progressive weakness and spasticity of the lower limbs. Rate of progression and the severity of symptoms are quite variable. Initial symptoms may include difficulty with balance, weakness and stiffness in the legs, muscle spasms, and dragging the toes when walking. In some forms of the disorder, bladder symptoms (such as incontinence) may appear, or the weakness and stiffness may spread to other parts of the body. SPG23 is an autosomal recessive form characterized by childhood-onset of gait difficulties and pigmentary abnormalities, including premature graying of the hair and vitiligo-like or hyperpigmented skin lesions.




Lison syndrome
Spastic paraparesis, vitiligo, premature graying, characteristic facies
Spastic paraplegia with pigmentary abnormalities


Hereditary spastic paraplegia