10 Best Spinal Deformity Correction doctors in Nh-3

It sounds like he experienced a severe head injury at a young age, resulting in significant impairments. Given the complexity of your brother's situation, it would be best to seek the expertise of specialists such as pediatric neurologists or neurosurgeons, 

The problems your wife has are most likely due to the arachnoid cyst. This is a small, fluid-filled pouch that develops in the brain and may lead to pressure and dizziness. Although very serious, not every arachnoid cyst requires surgery. This issue in the long term may be diminished by consistent monitoring by a neurosurgeon to check for early warning signs. In some cases, the operation is an answer to avoid the worsening of the symptoms or the visible growth of the cyst. The road to recovery can provide the most appropriate therapy options with a neurosurgeon to come up with the best possible solution.

Multiple sclerosis affects everyone differently. I suggest you to get a second opinion from a neurologist who specializes in MS. They can provide a treatment plan tailored to your mother's specific needs. It's important to continue any ongoing treatment while seeking additional medical advice.