Lesch-Nyhan syndrome natural history
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aarti Narayan, M.B.B.S [2]
Natural History
- Patients with HGPRT deficiency are normal at birth.
- One of the first signs of the disease may be the observation of orange crystals in the diapers, or crystalluria with obstruction of the urinary tract.
- Other uncommon forms of presentation include renal failure or acidosis with repeated vomiting. Psychomotor delay, when present, becomes evident within 3 to 6 months.
- A delay in the acquisition of sitting and head support with hypotonia and athetoid movements may lead to neurological consultation. Self-mutilation, in the form of lip biting or finger chewing, can appear as soon as teeth are present.
- Eventually, as uric acid builds up in tissues, symptoms of spasticity, seizures, nephrolithiasis and self mutilation develop.
Complications
- Severe, progressive disability if likely.
- Spasticity
- Dystonia
- Nephrolithiasis
- Urinary tract infection
- Gouty arthritis
- Skin and soft tissue infections
- Hip dysplasia and subluxation
- Pneumonia
- Scoliosis
- Fractures
- Atlanto-axial joint subluxation
Prognosis
The prognosis for individuals with LNS is poor. Death is usually due to renal failure in the first or second decade of life.