GHEORGHE RAFTU, MIHAELA DEBITA, CIPRIAN DINU, ALEXANDRA PANGAL, DIANA HODOROG, DAN IULIAN CUCIUREANU THE ROLE OF CHEMICAL FACTORS IN THE OCCURRENCE OF THE NERVOUS SYSTEM DISORDERS POSTTRAUMATIC EPILEPSY Because an epilepsy occurring at a time interval after a cranio-cerebral trauma can be considered post-traumatic epilepsy, so in a causal relationship with the trauma, it must meet some conditions. Epilepsy is a chronic cerebral disorder manifested by recurrent, spontaneous epileptic seizures; with a sudden episode, a stereotype of motor, sensitive, sensory, behavioural manifestation, and / or alteration of the state of consciousness due to sudden, unprovoked activation of a neuronal population. To support the diagnosis of the first epileptic seizure, additional information is required from the anamnesis, the general and neurological clinical examination of the patient. The diagnostic approach continues, under the direct supervision of the neurologist, by identifying the aetiology of epilepsy. The study includes 27 epilepsy cases studied in 2014-2018. The most common type of epileptic seizure is the tonic-clonic one that affects the entire brain, and this is also the most visible form of epilepsy that manifests itself in the form of a generalized crisis, identified by involuntary convulsions that lead to partial or total loss of consciousness during the crisis. Epilepsy is caused by an explosion of intense electrical activity that suddenly occurs in the brain, and the resulting convulsions can occur in several forms depending on the area where this intense brain activity occurs.