 [ Symptoms ] i have a big lump on my lower right side of my lip what could it be  i have got precribed with concerta and just got a flue shot and now i have a lump on the bottom of my right side lip [ Disease ] i am sorry you are experiencing this it must be pretty unpleasant it is difficult to tell what is causing the lump on your lip neither a flu shot nor the concerta should cause that to happen if the lump has spread or you experience a rash shortness of breath or difficulty breathing these could be signs of an allergic reaction you should get medical attention right away however if it is just one lump that does not itch or spread then it may simply be a coincidence that you noticed it after you started the concerta and got a flu shot if the bump does not get better soon i would suggest you make an appointment with your health care provider to have it looked at hope this helps