Tourette’s Syndrome and Mycoplasma Pneumoniae Infection
Allen, a 7-year-old boy, had suffered from slight motor (blinking and head shaking) and vocal (gurgling) tics since age 5. Three months before admission his tics increased in intensity and frequency and were accompanied by movement of his legs and arms. The results of a laboratory examination on admission showed normal routine blood values. The results of a lumbar puncture examination revealed CSF with 45 leukocytes/l, 56 mg/dl glucose, and 47 mg/ml protein. The results of all other bacterial, serological, and viral tests were negative. The serum titer of antibodies to Mycoplasma pneumoniae tested by microparticle agglutination assay was found to be 1:80,000. The results of an immunoblot revealed positive immunoglobulin (Ig)A, IgM, and IgG responses. Mycoplasma pneumoniae DNA was detected by a polymerase chain reaction assay of nasopharyngeal aspirate and a CSF examination (4). The authenticity of the DNA was confirmed by sequential analysis. In addition, Mycoplasma pneumoniae was cultured from Allen’s nasopharynx and throat. Since Mycoplasma pneumoniae-induced deterioration of Tourette’s syndrome was suggested, treatment with erythromycin was begun (900 mg/day) and continued for 4 weeks. Allen’s tics disappeared, and the antibody titer to Mycoplasma pneumoniae decreased to 1:1,280.Bailey, a 13-year-old girl, had had motor and vocal tics and an attention deficit disorder since age 4. At admission her motor tics included shaking of her head, arms, and legs. Vocal tics comprised crying and coprolalia. The results of a blood examination revealed serum antibody titers to Mycoplasma pneumoniae (1:5,120) and positive IgA, IgM, and IgG responses. The results of a CSF examination showed slight inflammatory signs (15 leukocytes/l, 45 mg/dl protein, 49 mg/dl glucose) and a positive nested polymerase chain reaction for Mycoplasma pneumoniae DNA. In addition, Mycoplasma pneumoniae was cultured from Bailey’s oropharynx. Therapy with erythromycin was begun (1600 mg/day). After 4 weeks of treatment, Bailey’s antibody titer decreased (1:640), and there was marked clinical improvement of motor and vocal tics; however, signs of attention deficit disorder persisted.
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