Optic neuritis occurs when swelling (inflammation) damages the optic nerve that transmits visual information from your eye to your brain. Symptoms include pain on eye movement and vision loss in one eye. Optic neuritis can occur during the first relapse of multiple sclerosis (MS).
Parkinson’s disease occurs when death of cells in a region of the midbrain is associated with deficiency of the neurotransmitter dopamine. It mainly affects the motor system leading to the progressive emergence of tremor, muscular rigidity, and slow, imprecise movement, chiefly affecting middle-aged and elderly people. Upon progression of the disease can manifest cognitive impairments such as executive function deficits, attention difficulties, slowed thinking, difficulties in word-finding, and difficulties in learning and remembering information thus causing significant disability to patients and burdens for caregivers.
Multiple sclerosis (MS) occurs when an abnormal response of the body’s immune system causes inflammation that damages myelin, a sheath that surrounds and insulates the nerve fibers, as well as the nerve fibers themselves, thus altering or stopping messages within the CNS. Multiple sclerosis progression varies from person to person and can lead to severe disability, impairing the daily activities and requiring assistance with walking.
Epilepsy occurs when abnormal electrical activity in the brain lead to recurrent seizures which are sudden episodes of sensory disturbance, involuntary movements, loss of consciousness, or convulsions. These episodes can result in physical injuries and impact on the quality of life for people with the disease and their families.