For patients with severe oral commissure droop from facial nerve damage undergoing surgery, botulinum toxin type A (BoNT-A) ...

Though many people think of facial drooping as a sign of stroke ... To diagnose the underlying reason for the paralysis, ...

For example, patients who have had Bell's palsy can develop HFS ... Potential side effects include an eyelid droop (ptosis), facial weakness or increased tearing, all of which resolves over time.

Bell's Palsy is a temporary but dangerous condition that can cause the face to droop and cause difficulty ... Diabetics and asthma patients may also suffer from Bell's palsy.