...hip arthritis plus sciatica...
This is so incredibly painful. What has given me temporary relief is to lie on a 10-lb barbell wrapped in a towel (or similar object), positioning it under the hip bones. Experiment with the location. It provides a form of acupressure. If you do it just right it hurts like hell, but the pain does subside as the muscles begin to relax. And it really brings some relief. Also try icing it. Do not use alcohol as that will exacerbate the inflammation, even though it may dull your pain.
