My 5yr old son has been having headaches dizziness and even vission loss followed with stomach pains and I just found out he has pinworms. Can he be a?

No. He needs to be . Seen by his pediatrician, who may choose to refer him to a pediatric neurologist for an MRI of the brain & an eeg. Tell his pcp when his symptoms began, what time of day they occur, & how long they last; also give your family history for migraines, epilepsy, other neurological disorders. Ask if his kg teacher has noticed any change in his behavior or learning since the onset of his symptoms.