I have a constant headache and my lips can get numb sometimes ....

I get something called Bell's palsy it pops up every now and then because of stress. I just have to do facial exercises and helps sometime.

Yup, used to get it a lot before the Plaquinel. My left side is usually effected the most. A lot of times my face, lip, ear, and side of nose all on that side. Got it in my little toes and pinkies at times too. One time my entire left side went numb and I went in to ER thinking a stroke. After they calmed me down they said it was most likely a panic attack. A cautionary MRI was done of brain where they found a small beginning aneurysm in my right carotid artery. Still not sure if related???? Just something to consider though

My lips was numb, not sure!

I have and mine is from TIA'S (mini strokes). I get a pain in my head that pings around then loose the feeling in my left cheek and around my eye.