Parkinson’s disease is a progressive disorder that causes tremors (involuntary trembling movements, usually of the hands), slow movement, and stiffness.
It results from degeneration of cells in a part of the brain that produces dopamine, a chemical that helps to fine-tune muscle movements.
In Parkinson’s disease, the cells produce much less dopamine, resulting in impaired muscle control. In most people, there is no obvious cause of the condition, although genetic factors may be involved in some cases.
It can also result from an inflammation of the brain (encephalitis) or from damage to the basal ganglia from drugs or repeated head injuries.
The main symptoms are trembling of one hand, arm, or leg, which may progress to affect limbs on the opposite side; muscle stiffness, making it difficult to begin moving and making movements slower; and problems with balance.
Other symptoms may include a stooped posture, shuffling walk, problems speaking, loss of facial expression, and difficulty swallowing. Some people also develop dementia (opposite) or depression.
Treatment may include supportive therapies, such as physical therapy, and medication to improve symptoms. In some cases, surgery may be an option.

Othere related diseases

MENINGITIS
In meningitis, the meninges (membranes that surround the brain and spinal cord) become inflamed. It is most commonly the result of a viral or bacterial infectio...

MERALGIA PARESTHETICA
In meralgia paresthetica, there are abnormal sensations, such as burning pain, numbness, and tingling in the outer thigh. Symptoms are often made worse by stand...

MIGRAINE
A migraine is a recurrent, often severe headache that usually occurs on one side of the head and may be accompanied by symptoms such as nausea and visual distur...

MORTONS NEUROMA
In this condition, a nerve between the toe bones becomes irritated and thickened. Usually, the nerve affected is between the third and fourth toes, but sometime...

MULTIPLE SCLEROSIS
In multiple sclerosis (MS), nerve cells in the brain and spinal cord become progressively damaged, causing problems with a wide range of body functions.
El...

NARCOLEPSY
Narcolepsy is characterized by persistent daytime sleepiness, with repeated episodes of sleep throughout the day, even at inappropriate times, such as while eat...

NEURALGIA
Postherpetic neuralgia Neuralgia is pain caused by damage to, or irritation of, a nerve. The pain usually occurs in brief bouts and may be severe. Some types of...

PAIN SYNDROME
Formerly known by various names, including causalgia and reflex sympathetic dystrophy, complex regional pain syndrome is a condition in which there is long-last...