DISORDERS OF NEURAL SYSTENM
Multiple sclerosis is an autoimmune disorder where there is a progressive destruction of the myelin sheath of the neurons in the central neural system. The destroyed region of the myelin sheath forms scar tissue or plaques.
Every time new plaques are formed, a fresh attack occurs.
Symptoms include weakness n muscles, double ision and other abnormal sensations. Epilepsy or seizures is characterised by abn
synchronous electrical discharges from many neurons in the brain resulting in involuntary contractions of the skeletal muscle and abnormal sensations of smell, sight andAlzheimer's disease is the most common form of dementia (a group of conditions that gradually destroy brain cells) among the elderly and leads to a progressive decline in mental function. It slowly decreases a person's memory and ability to learn, reason, make judgements, communicate
and carry out daily activities. There is no cure and currently available medications provide small symptomatic benefits for some patients but are unable to reduce disease progression.
Parkinson's disease is a degenerative motor systerm
disorder that affects muscle . It control is caused by the loss of
dopamine producing brain cells. Symptoms include trembling
and stiffness of the limbs and trunk; postural instability,
impaired balance and coordination leading to difficulty in movement, communication and day-to-day activities.
Schizophrenia is a psychiatric mental disorder in which
a person cannot differentiate between real and unreal
experiences, cannot think logically or behave normally in social situations. Patients may show a variety of symptoms such as delusions, hallucinations, disordered thoughtsnega negativismgidity or lack of emotions. It may be caused due to genetic, social or psychological factors hearing.
