It sounds like your son might be experiencing an eye movement disorder, which could be a sign of a neurological issue. I recommend taking him to a pediatric neurologist as soon as possible to get a proper diagnosis and treatment. 

Epilepsy can be challenging at this time. It’s worrying that you have a few seizures each year. It may be a good idea to see a neurologist. They can help work out whether it’s safe for you to get pregnant while controlling your fitness. You need to strike the right balance for yourself and your unborn child too.

Ringing in the ears and deafness after an accident can result from injury to the tiny hairs in the inner ear. This might occur if there is an abrupt loud noise or trauma. It is necessary to consult with an audiologist. They will be able to determine what would be most helpful for your situation in terms of hearing improvement methods. Do not be afraid because there are treatments that can be used for you to be able to hear well again.

Severe head pain which radiates to the neck with stiffening neck and the legs and foaming at the mouth are potential symptoms that can be addressed as epilepsy. Epilepsy is a disorder of the brain characterized by the occurrence of abnormal electrical activity, sending inappropriate signals through the nervous system. It is of course injuriously crucial to make it the first choice to see a specialist doctor in case of these symptoms. The common method for the treatment of epilepsy is drug use for control of the seizure and prevention of a future occurrence. 

Headaches can arise in many ways, for example, stress, lack of sleep, or even looking at screens for too long can cause them. It's better to lie in a peaceful place, drink a lot of plain water, and abstain from excessive screen time. If the pain persists, you need to go to a doctor and get a thorough checkup done.

When a 7 year old experiences a head injury, several tests may be conducted to diagnose the injury..but again it depends on how severe the injury is. Physical examination may be adviced to assess symptoms and neurological function, imaging tests like CT scans or MRIs to identify bleeding or abnormalities in the brain, X-rays to check for skull fractures, and blood tests to evaluate various factors

According to your LS spine MRI, you can discern that you most probably have a herniated disc. You should make an appointment with a spinal-disorder specialist to get more thorough advice and treatment.