In most of the cases this happens due to a condition called as Bell's palsy. Facial nerve passes on it's way out of the skull through the internal ear. Here it is compressed in most cases. The patient usually has runny nose or else some cold related symptoms. The symptoms usually resolve in three weeks. There can be other causes of facial paralysis, in which case the nerve is pressed.
The cranial nerves involved in diplopia are the third (oculomotor), fourth (trochlear), and sixth (abducens) cranial nerves, which control eye movement and coordination. Issues with these nerves can result in misalignment of the eyes, leading to double vision.
The cranial nerve involved in raising the eyelids is the oculomotor nerve (cranial nerve III). For focusing the lens of the eye for accommodation, the oculomotor nerve controls the ciliary muscle.
Smell impulses are carried by the cranial nerve called the olfactory nerve (cranial nerve I). It is responsible for transmitting information about odors from the nose to the brain.
Cranial nerve II is called the optic nerve. It is responsible for transmitting visual information from the eye to the brain.
The cranial nerve that innervates the ear is the vestibulocochlear nerve (CN VIII). It has two branches: the vestibular nerve that controls balance and the cochlear nerve that controls hearing.
The Facial Nerve or Cranial Nerve VII is the nerve involved with Bell's Palsy.
Damage to the facial nerve (cranial nerve VII) can result in drooping of the mouth on one side, a condition known as facial paralysis or Bell's palsy. This nerve controls the muscles of facial expression, including those involved in smiling, frowning, and closing the eyes.
The optic nerve (cranial nerve II) is not involved in taste, as its primary function is vision. Taste is primarily mediated by the facial nerve (cranial nerve VII), glossopharyngeal nerve (cranial nerve IX), and vagus nerve (cranial nerve X).
The spinal accessory nerve (cranial nerve XI) is involved in hyperextending and flexing the neck. This nerve innervates the trapezius and sternocleidomastoid muscles, which are involved in these movements.
Trigeminal (5th) cranial nerve
It is the 7th cranial nerve (facial nerve).
VII the cranial nerve or the Facial
The cranial nerves involved in diplopia are the third (oculomotor), fourth (trochlear), and sixth (abducens) cranial nerves, which control eye movement and coordination. Issues with these nerves can result in misalignment of the eyes, leading to double vision.
The Vagus nerve
Cranial nerve 9: glossopharyngeal
Trigeminal neuralgia is a rare disorder of the sensory fibers of the trigeminal nerve (fifth cranial nerve), which innervate the face and jaw. The neuralgia is accompanied by severe, stabbing pains in the jaw or face.
The Facial Nerve or Cranial Nerve VII is the nerve involved with Bell's Palsy.