A bit of microcephaly in an adult may have an effect on a child of ten. The causes of cerebellar atrophy include degenerative changes, secondary factors, genetic factors and so on. 1. Degenerative changes: with the growth of human age, cerebellar degenerative changes can occur, head CT or MRI will suggest cerebellar atrophy, most patients do not have obvious symptoms, normal human aging process, will not affect the next generation. 2. Secondary factors: if the patient has traumatic cerebellar injury, cerebellar infarction, cerebellar hemorrhage and other underlying diseases can lead to brain cell damage and necrosis, and the emergence of cerebellar atrophy, there is no genetic predisposition, so it will not affect the 10-year-old child. 3. Genetic factors: such as spinal cerebellar ataxia, cerebellar atrophy can also occur, this disease is an autosomal dominant disease, the onset of the age of 30 ~ 40 years old, adults if this disease leads to cerebellar atrophy, the child is likely to have an impact.