When rheumatoid arthritis affects the shoulders and neck, reaching up to take off or put on the shower curtain can be excruciating and/or difficult.
Last year, while staying in a hotel, a new joint-friendly idea was revealed. The shower curtain in our hotel room came with snaps, making it easy to remove the lower part - which is striped in the photo - for washing. Plus, if your shower stall is on the dark side, the mesh at the top allows more light to enter.
Here is a link for this brilliant product.
While you're in the shower, remember to work on those arms with this range of motion (ROM) exercise!