Flank Pain With Uncertain Cause

Home care

Follow these tips when caring for yourself at home:

• You may use acetaminophen or ibuprofen to control pain, unless your health care provider prescribed another medicine. If you have chronic liver or kidney disease, talk with your provider before you take these medicines. Also talk with your provider first if you’ve ever had a stomach ulcer or digestive bleeding.

• If the pain is coming from your muscles, you may get relief with ice or heat. During the first 2 days after the injury, put an ice pack on the painful area for 20 minutes every 2 to 4 hours. This will reduce swelling and pain. A hot shower, hot bath, or heating pad works well for a muscle spasm. You can start with ice, then switch to heat after 2 days. You might find that switching between ice and heat works well. Use the method that feels the best to you.

Follow-up care

Follow up with your health care provider if your symptoms don’t get better over the next few days.

When to get medical advice

Contact your health care provider right away if you have:

• Repeated vomiting.

• A fever of 100.4ºF (38ºC) or higher, or as directed by your provider.

• Chills.

• Flank pain that gets worse.

• Pain that spreads to the front of your belly (abdomen).

• Dizziness, weakness, or fainting.

• Blood in your urine.

• A burning feeling when you urinate or the need to urinate often.

• Pain in one of your legs that gets worse.

• Numbness or weakness in a leg.