Conversation: The conversation between human and AI assistant.
[|Human|] hi, i noticed a hard, ping pong ball size lump on by lower back area to the side of my spine that does not hurt and does not move. I may have bumped that area a few weeks ago and there is a remnant of a slight bruise. I have had back pain for about a month now, before I bumped it.
[|AI|]  Dear friend, thank you for your consultation. As you have told us that you used to have back pain before you bumped your back I must assume you have some chronic back pain problem. See, back problem can be of various types. But most commonly it is because of weakness or straining of back muscles around vertebra. So if you start doing regular physiotherapy like doing flexion exercise it will give you some relief.also, please don't lift heavy weight or bend forward too much.in this way you can give your back muscles a rest. And now I am telling you that the lump and the bruise you got can be due to swelling caused by that bump., so please do regular antiseptic Chat Doctor. Putting hot water bag on that lump will help to decrease the swelling. Thank you.