Answer :
Bell's palsy is caused by inflammation or damage to the facial nerve, leading to one-sided facial paralysis. It is often temporary and may be linked to a viral infection, resolving on its own usually within six months.
Bell's palsy is a paralysis of facial muscles caused by inflammation or damage of the facial nerve. This condition is characterized by muscle weakness that causes one half of the face to droop. While the exact cause of Bell's palsy is not known, it may be a reaction to a viral infection. In most cases, Bell's palsy resolves on its own within six months. Paralysis, in general, is the loss of sensation and movement in part of the body, which can occur for various reasons, such as a stroke, spinal cord injury, or diseases like poliomyelitis (polio) and botulism.
Bell's palsy is a paralysis of facial muscles caused by damage to the facial nerve which is cranial nerve VII. Its directs the muscles on one side of the face which including those that control eye blinking and closing and face expressions like smiling , speaking.
Cranial nerve are a set of 12 paired nerves in the back of your brain that transfer the electrical signals to the brain, face, neck , and torso. Cranial nerve VII is lower motor neuron lesion.
This nerve is runs from brain stem to through openings in skull to the face and tongue.Its sends information between the brain and the muscles used in facial expression.
To learn more about Cranial nerve here
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