Please help! i'm having painful hard lump below my rib cage on the left?

Painful hard lump: Dear riana, the possible causes of a 'painful hard lump' includes everything from an abcess (a boil) to sebaceous cyst to hematoma, and even benign lipomas, which can sometimes become uncomfortable. Fortunately for you, most physicians, including your pcp, will typically be able to quickly tell you what it is, and help treat you - if any treatment is actually necessary. So go to your pcp asap.