I have one too! and i have had a headache for 2 weeks but when i get the headache if i press the lump it takes my headache away if i continue to hold pressure on it ,but then it starts hurting so i have to just put up with the worst headache ever. it sweela when i have a headache. Ive had headaches for about a year thought it was tension headaches but now i found this lump im not sure ne more.