<s>[INST] i have noticed a smaller than pea sized lump in the fold of my right arm, where you normally have blood taken, the last time i had blood taken was around 5 months ago. the lump is not painful and you can move it around when you touch it, howerver my arm does feel tingly and kinda warm. what could this be? [/INST] hi.based from your description, it could be a simple cyst or an inflammatory process. do you have any history of insect bite or sting prior to that lump?a consult with your physician for physical examination is recommended. management (medical or surgical) will be directed accordingly.hope this helps.good day!!~dr.kaye </s>