What causes tic disorder

Tic syndrome is caused by what, at this stage there is no exact cause and pathogenesis, may be related to the following factors: children in the growth and development period by various factors, such as psychological factors, environmental factors, and the interaction of these factors. A small number of genetic factors, not all tic disease are genetic, some children with genetic genes do not disease. Parents often quarrel, children grow up in a bad family environment, by mental, psychological trauma, the above brain did not find substantial diseases. Brain substantial diseases, intracranial infections such as encephalitis virus. Streptococcal infection after the performance of autoimmune reactions, but also easy to show tic disease. Calcium deficiency, zinc deficiency, high lead will also show tic disease.