Posts Tagged ‘Brain and nerves’
Carpal tunnel syndrome – Definition
Carpal tunnel syndrome is a nerve disorder of the hand caused by compression of the median nerve. The median nerve gets squeezed inside a narrow passage in the wrist called the carpal tunnel. This nerve provides feeling to the thumb, index and middle fingers, and half the ring finger.
von Willebrand disease – Definition
von Willebrand disease (vWD) is an inherited blood disorder. It decreases the blood’s ability to clot. As a result, bleeding lasts longer than usual.
von Willebrand’s disease is the most common hereditary bleeding disorder, affecting about 1% of the population. It affects both sexes approximately equally. There are no racial or ethnic associations with this disorder.
Vertigo – Definition
Vertigo is a feeling of spinning or whirling when you are not moving. It can also be an exaggerated feeling of motion when your body is still. Vertigo is different from passing dizziness or light-headedness.
Vertigo – Causes
Inner ear nerves and structures sense the position of your head and body in space. Vertigo is often caused by problems with these nerves and structures.
Vertigo can be due to the following conditions:
Benign Paroxysmal Positional Vertigo (BPPV)
There are tiny particles that naturally exist in the inner ear. Sometimes these particles can be displaced when the head is tilted. The particles then push against hair-like sensors in the ear. This can cause vertigo. BPPV may result from:
- Head injury
- Disorders of the inner ear
- Age-related breakdown of the vestibular system
- Idiopathic (no obvious cause)
Trigeminal neuralgia – Definition
Trigeminal neuralgia (TN) is a disorder of the trigeminal nerve (fifth cranial nerve) that causes severe, shooting pain along one side of the face. The trigeminal nerve senses touch, pain, pressure, and temperature. It also helps make saliva and tears.
In TN, pain usually lasts for less than a second to a few seconds and may come and go for days, weeks, months, or years. It may go into remission or stop completely for months or years. Over time, though, the attacks may become more frequent and more severe. Attacks can be brought on by chewing, washing, shaving, touching, or even a breeze on the face.