What does it mean if i have a blue spot on my top lip?

Venous lakes: It most likely is venous lakes. Just to be safe though it would be important to have your dentist verify. A quick visit to your dentist should be able to rule out anything else! Hope this helps!

Mole?: Depending on the depth of the pigment under the skin, a mole may appear blue. If it changes in size, shape,color or bleeds, see your doctor for an evaluation.