You seem to have a focal seizure disorder (that is, seizures coming from one area of the brain, if your EEGs and symptoms are correct)
Its not clear whether the accident caused some head trauma as it is not unusual to develop focal seizures after varying severities of head trauma
There are other causes of focal epilepsy such as tumors, disorders of inherited or acquired brain development, or vascular malformations. This type of seizures (focal seizures) is very common and can come from any area of the brain. Usually an MRI is done to detect the above causes, but sometimes even the MRI is normal in a significant proportion of cases.
Also, if you are female, we know that seizures can cluster or occur around the menstrual period (this is termed "catamenial' seizures)
For reasons we do not entirely know, a seizure medication can work initially but lose effect later, so this is not unusual either. There are many more seizure medications that could be tried instead. Unfortunately if 2-3 appropriate seizure medications are not helpful, there is only a small chance that more drugs will be helpful. In this situation, the focal seizure area of the brain can be removed surgically with a good chance of success or even cure.
If you wish, you could have a second opinion at the Cleveland Clinic Epilepsy Center where we have extensive experience in treating focal seizures, and evaluating whether surgery is an option. This can be done by making an appointment (1800 CCF CARE) or by econsult (see Cleveland Clinic website, have all you r records available)
Good luck
I also forgot to add that I am a male, 35, smoker, no drugs (except prescription) or alcohol. I have read that pattern seizures are usually associated with eplipsy in males experiencing hormone changes or imbalance. The precedence that sets my case apart from those is that my seizures started occuring after a car wreck in which I had a facial fracture and spinal injuries. And my seizures have been related to multiple concussions. I apologize for not including that in the previous statements. Thank you.