Can keppra (levetiracetam) cause dyslexia symptoms? my son started having symptoms shortly after taking the medication

Keppra (levetiracetam): That's not an expected side effect of keppra (levetiracetam). Perhaps it is causing grogginess or difficulty concentrating due to the medication/dose in which case it may need to be changed. See your neurologist.

Only 10% of cases: of dyslexia are from visual-perceptual difficulties, which may be seen in kids with Tuberous Sclerosis or Neurofibromatosis I, genetic disorders that can also cause seizure onset at puberty. 90% of dyslexia is from the brain's difficulty processing phonemes, the smallest units of sound in a language. Look further for genetic & other medical causes of seizures with loss of academic skills.