The adult human brain weight varies however it is about 1.5 kg with a volume of around 1130cc in women and 1260cc in men. The human brain is composed of neurons, glial cells, and blood vessels. The number of neurons is about 200 billion with 125 trillion connections in the cerebral cortex alone.
The Brain is pre disposed to many ailments that mostly result in poor outcomes. The cost of treatment for Brain disease is also very high.
- Meningitis: An inflammation of the lining around the brain or spinal cord, usually due to infection. Common symptoms include neck pain, headache, and confusion.
- Encephalitis: An inflammation of the brain tissue, usually due to infection. Meningitis and encephalitis often occur together, which is called meningo- encephalitis.
- Brain abscess: A pocket of infection in the brain, usually caused by bacteria. Antibiotics and surgical drainage of the area are often necessary.
In this category epilepsy is included. Head injuries and strokes may cause epilepsy, but usually no cause is identified.
- Concussion: A brain injury that causes a temporary disturbance in brain function, sometimes with unconsciousness and confusion.
- Traumatic brain injury: Permanent brain damage from a head injury and associated with obvious mental impairment or more subtle personality and mood changes can occur.
- Intracerebral hemorrhage: Any bleeding inside the brain, which may occur after a traumatic injury or due to high blood pressure.
Tumors, Masses, and Increased Pressure
- Brain tumor: Any abnormal tissue growth inside the brain. Whether malignant (cancerous) or benign, brain tumors usually cause problems by the pressure they exert on the normal brain.
- Glioblastoma: An aggressive, cancerous brain tumor. Brain glioblastomas progress rapidly and are usually difficult to cure.
- Hydrocephalus: An abnormally increased amount of cerebrospinal (brain) fluid inside the skull. Usually, this is because the fluid is not circulating properly it can be congenital or acquired.
- Normal pressure hydrocephalus: A form of hydrocephalus that often causes problems with walking, along with dementia and urinary incontinence. Pressures inside the brain remain normal, despite the increased fluid.
- Pseudotumor cerebri: Increased pressure inside the skull with no apparent cause. Vision changes, headaches, dizziness, and nausea are common symptoms.
Vascular (Blood Vessels) Conditions
- Stroke: Blood flow and oxygen are suddenly interrupted to an area of brain tissue, which then dies. The body part controlled by the damaged brain area (such as an arm or a leg) may no longer function properly.
- Ischemic stroke: A blood clot suddenly develops in an artery, blocking blood flow and causing a stroke.
- Hemorrhagic stroke: Bleeding in the brain creates congestion and pressure on brain tissue, impairing healthy blood flow and causing a stroke.
- Cerebrovascular accident (CVA): Another name for stroke.
- Transient ischemic attack (TIA): A temporary interruption of blood flow and oxygen to a part of the brain. Symptoms are similar to those of a stroke, but they resolve completely (usually within 24 hours) without damage to brain tissue.