Bell's Palsy(7th cranial nerve palsy or facial nerve palsy)

Bell's Palsy(7th cranial nerve palsy or facial nerve palsy)
Bell's palsy is really a paralysis or weakness from the muscles on one side of the face. Damage to the facial nerve that controls muscles somewhere of the face causes that side of the face to droop . The nerve damage could also affect your feeling of taste and how you are making tears and saliva. This problem comes on suddenly, often overnight, in most cases gets better by itself within a few weeks.
Bell's palsy is really a weakness of the face muscles. It develops suddenly, usually somewhere of the face. The reason is not clear but many cases are probably due to a virus infection. Many people make a full recovery within 2-3 months. A training course of steroid tablets started within 72 hours from the onset improves the possibility of full recovery even more. You should protect your skills if you cannot close your eyelids fully.
Bell's palsy is really a weakness (paralysis) that affects the muscles from the face. It is as a result of problem with the facial nerve. The weakness usually affects one for reds of the face. Rarely, each side are affected. Many people who've a Bell's palsy at first believe that they have had a stroke. This isn't so. Bell's palsy is very dissimilar to a stroke and full recovery happens in most cases. Bell's palsy is named following the doctor who first described it.
 facial nerve

You've got a facial nerve (also known as the seventh cranial nerve) on both sides of your face. Each facial nerve arrives from your brain, via a small tunnel inside your skull just under your ear.
The nerve splits into many branches supplying the small muscles from the face that you use to smile, frown, etc. Additionally, it supplies the muscles that you employ to close your eyelids.
Branches from the facial nerve also take taste sensations out of your tongue to your brain.
Reasons for Bell's palsy
It is thought that inflammation develops round the facial nerve because it passes through the skull in the brain. The inflammation may compress (squash) the nerve because it passes through the skull. The nerve then partly, or fully, reduces until the inflammation goes. When the nerve stops working, the muscles the nerve supplies also cease working.
Causes of bell's palsy
The cause of the inflammation isn't known but, in many cases, it is probably due to a viral infection. There's some evidence the cold sore virus (herpes virus) or the chickenpox virus (varicella zoster virus) cause most cases of Bell's palsy. Almost everyone has chickenpox at some stage (usually like a child) and many people have fever blisters. The virus does not completely pursue you have chickenpox or a cold sore. Some virus particles remain dormant (inactive) within the nerve roots. They are doing no harm there, and cause no symptoms. For reasons that aren't clear, the virus can start to multiply again (re-activate). This could be many months or years later. In certain cases, the 're-activated' virus is believed to cause inflammation round the facial nerve to result in Bell's palsy.
 symptoms of Bell's palsy
• Weakness of the face that is usually one-sided. The weakness normally develops quickly, in a couple of hours or so. You might first notice the weakness after you have up in the morning, so it may appear quite dramatic. It might gradually become worse over a few days. The effects of the weakness vary, based on whether the nerve is partially or fully affected. Included in this are the following:
o Your face may droop to 1 side. When you smile, only 1 / 2 of your face may move.
o Chewing food around the affected side can be a problem. Food may get trapped involving the gum and cheek. Drinks and saliva may avoid the side of your mouth.
o You might not be able to close a watch. This may cause a watery or dry eye.
o You might not be able to wrinkle your forehead, whistle or fly out your cheek.
o You might have some difficulty with speech, because the muscles in the side from the face help in forming some words. For example, words starting with a P.
• Most cases are painless or cause only a mild ache. However, many people develop some pain close to the ear which can last for a couple of days.
• Loud sounds may be uncomfortable and normal noises may seem louder than usual. The reason being a tiny muscle within the ear may cease working.
• You may lose the feeling of taste on the side of the tongue that's affected.
• Sudden weakness or paralysis somewhere of your face that triggers it to droop. This is actually the main symptom. It might make it hard for you to definitely close your eye on that side of the face.
• Drooling.
• Eye problems, for example excessive tearing or perhaps a dry eye.
• Loss of capability to taste.
• Pain in or behind your ear.
• Numbness within the affected side of the face.
• Increased sensitivity to sound.