Small soft pulsating lump developed on face since 4 years ago being out in the sun. What could it be? Could Botox help? (Photo)

small soft pulsating lump just above lip. Feels waxy. It started after being in sun. The next day looked like I had a heartbeat on my face with small soft lump. It pulsates (u can see it) it's getting worse &I can feel tingling and twitching under the skin & burning also the skin is white. looks worse in different lights. What is this & what treatments? I'm starting to get self conscious, starting to worry me. have seen docs and everyone says there is nothing they can do. Could Botox help?