Delayed cerebellar ataxia--a complication of Plasmodium falciparum malaria

Cerebellar ataxia is an unusual post malarial complication. We encountered 10 patients of this disease (3 in 1992 and 7 in 1994) during the malaria epidemic period in Bikaner, Rajasthan. All patients were permanent residents to malaria endemic areas. The ataxic symptoms appeared after an afebrile period of 2-7 days. The neurological examination revealed no other abnormality except a cerebellar syndrome interfering with normal gait and speech. Lower limbs were affected more than the upper limbs and the mean delay between onset of fever and onset of cerebellar ataxia was 13 days. Peripheral blood film of all cases showed gametocytes of Plasmodium falciparum and in two cases schizonts of the same. All the patients improved within one month without any residual deficit. Further follow up for next 4 weeks revealed no abnormality.