Welcome to health care magic
The symptom you have mentioned is rather unusual. The cases with lip pain in my experience usually have herpes simplex
, or cheilitis
( fissuring or redness
or swelling). You don't seem to have any symptom other than pain.
There is a rare syndrome called Satchmo syndrome associated with pain over lips, usually seen in people who play musical instrument( wind instruments). Are you a musician ?
Sometimes Vitamin B deficiencies and anemia
can cause lip pain but usually is associated with some inflammation of the lip. Try taking Becosules
Hope this helped. If i could see a photo of your lip it would help. You can send it to email@example.com