Numbness and pain in the lower lip may be related to facial neuritis, as well as herpes zoster and other diseases.
1. Facial neuritis: abnormalities in the mandibular branch of the facial nerve can cause numbness and pain in the jaw and lips, and even crooked corners of the mouth and drooling.
2. Lipitis: when the skin of the lips is infected due to prolonged stimulation by some viral, bacterial and chemical factors, the localized skin may be red, cracked and peeling, and the recurrent episodes of the disease may affect the skin nerves and cause numbness and pain.
3. Herpes zoster: Herpes zoster is a skin disease caused by infection with the herpes zoster virus, because the virus can lead to local nerve damage, so the local pain, numbness and burning sensation may occur.
There are more factors that can cause numbness and pain in the lower lip, and a doctor’s visit is required for specific cases.