What's the difference between i.e. and e.g.?
Lesch-Nyhan syndrome Lesch-Ny·han syndrome (lěsh'nī'ən)
A metabolic disorder that occurs in males and is associated with an enzyme deficiency and is characterized by hyperuricemia and uric acid urolithiasis, choreoathetosis, mental retardation, spastic cerebral palsy, and self-mutilation of fingers and lips by biting.