Objective: To investigate the clinical characteristics of methylmalonic academia in adolescence cases.
Methods: 4 cases were diagnosed methylmalonic academia by gas chromatography- mass spectrogram whose clinical, manifestations and treatment process were analyzed.
Results: The main clinical manifestations in 4 cases with methylmalonic academia were intellect impairment, epilepsy, pyramid signs; 2 of them suffered with hypoplasia and optic atrophy, one of them suffered with papilledema. Symptoms were improved after treated with cobamamide and L-carnitine in all the 4 cases 1 months later.
Conclusions: The main clinical characteristics of methylmalonic academia in adolescence were intellect impairment, epilepsy and pyramid signs. The symptoms could be improved after treatment.