<s>[INST] Overnight I ve discovered a bump on my forehead. It s hard as a bone about the size of a silver dollar. It s a little sensitive when I push on it but it doesn t hurt, just feels funny and looks a little odd. I don t remember getting bumped on the head at all and I m usually a very light sleeper. I m just getting over a week long cold that has moved down into my chest (bad cough, lots of phlegm). Is this common? I m not sure if this is an issue and when to run to my local doctor. [/INST] hi.based from your description, it could be a lipoma (a fatty deposit), a fibroma (fibroid tissue formation) or a cystic lesion. a consult with a physician, preferably a general surgeon is best for clinical evaluation. diagnostics and management (medical and/or surgical) will be directed accordingly.hope this helps.good day!!~dr.kaye </s>