Alzheimer’s disease Dementia is a condition in which there is gradual, progressive deterioration in mental function. It most commonly affects older people and is usually caused by diseases of the brain or blood vessels in the brain.
The most common form is Alzheimer’s disease, in which a series of transient ischemic attacks (small strokes) over a long period of time leads to damage and death of brain tissue.
Another form is vascular dementia, in which the blockage of small blood vessels in the brain causes numerous small areas of brain damage. In dementia with Lewy bodies, tiny nodules (called Lewy bodies) collect in the brain and impair brain function.
Dementia can occasionally occur in younger people as a result of a brain injury or diseases such as Parkinson’s disease.
Treatment of dementia is aimed at relieving or slowing the progress of symptoms

Othere related diseases

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...

PARKINSONS DISEASE
Parkinson’s disease is a progressive disorder that causes tremors (involuntary trembling movements, usually of the hands), slow movement, and stiffness.
I...

PERIPHERAL NEUROPATHY
Neuropathy is a general term for disease, damage, or malfunctioning of the peripheral nerves, which connect the brain and spinal cord to the rest of the body. <...

SCIATICA
Sciatica is nerve pain caused by pressure on or damage to the sciatic nerve, which runs from the base of the spinal cord down the legs and into the feet.
Th...

STROKE
A stroke produces sudden brain damage due to a disturbance of the brain’s blood supply. The most common type (called an ischemic stroke) is due to blockage of...

SUBARACHNOID HEMORRHAGE
Subarachnoid hemorrhage is a type of stroke in which a blood vessel ruptures and blood leaks into the space between the inner two of the three layers of membran...

SUBDURAL HEMATOMA
A subdural hematoma occurs when there is bleeding into the space between the outer two of the three membranes covering the brain. This produces a pocket of clot...