### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I was in a vehicle accident about 3 weeks ago where I swerved off the road into a ditch then hit a driveway going about 50mph and jumped my car. I landed on all four tires of the car, no airbags deployed and with alot of force and I instantly felt sharp pain in my lower back. I went to the hospital where they checked me out and released me within the hour because the pain was bearable and they said it would be gone in about a week thinking is was just muscle spasms or bruised tissue but now almost 4 weeks later the pain is still there and focused to my right kidney mostly where it feels swollen and hard and is very painfull to touch. Theres no blood in my urine that I can notice, but I dont have an appetite, my skin is developing rashes at times, I cannot turn my back to the right without a sharp pain, and im just generally uncomfortable with that dull pain. What could this be?

### output:

Hello, Thanks for posting your query, If I take from your description, then the situation requires reevaluation by a physician. I want to believe that by right kidney, you mean right flank as we can not be 100% sure that the pain is coming from the kidney, but right sided flank pain could be as a result of injury to muscle tissues and organs beneath including kidney and spleen. If you are feeling hardness and pain around that area, then it is most unlikely due to internal organ damage but rather soft tissue damage (more peripherally). You could have injured the area without noticing during the accident, when was not noticed probably as a result of slow progress. For example, a soft tissue hematoma or hemorrhage due to damaged blood vessel could be developing gradually and only present as hard painful swelling some weeks later. The hematoma could even complicate to form an abscess depending on if bacteria affected the area. The rashes could fairly not be related to this injury and if related then it might be likely due to the fact that the kidney is actually injured too. In any case, your situation obviously requires thorough medical evaluation and subsequently treatment. Hope this helps