dear , birth asphyxia is a condition which occurs before or at birth, depending on its severity , it can cause various degree of brain damage, the multiple cysts in the brain is oherwise called as cystic leukomalacia ,which is an advanced form of damage, i would suggest an improved form of neuroimaging like the mri, antieplieptic drugs might have to be started depending on the EEg report, the mainstay of treatment here is massaging and other methods of develpoment stimulation as suggested by development therapist. if there is any degree of muscle stiffness diagnosed by the therapist, kindly try using muscle relaxants , suggest further help from a pediatric neurologist