Hi,
In case of Bell's Palsy there is dropping of the side of face with lack of control which is the cause of
drooling of saliva.
Also there is difficulty in closing the eye on the affected side.
It occurs due to disturbances related to seventh
cranial nerve known as
Facial Nerve, that suppliesmuscles of face..
It can be due to compression of nerve with any major
artery or at times tumor formation compressing the nerve..
Nerve trauma or viral infection can also be a cause..
As seeping saliva from side of the. Lips is not common and can be a sign of any underlying nerve problem.
So I would suggest you to consult a Neurophysician and get evaluated and a thorough clinical evaluation
and investigations like MRI scan can help in diagnosis and treatment will be done accordingly..
Resolution of the cause can help in reversing the symptoms..
The medications that is
steroids and antibiotics are appropriate and along with it you should also do
alternate warm and cool compresses and take Vitamin Supplements..
Hope I have answered your query.
Let me know if I can assist you further.