My showerhead leaks when water is being used in any other part of the house. Should I replace the showerhead (or washers) or is it a sign of a bigger problem?

My showerhead leaks when water is being used in any other part of the house. Should I replace the showerhead (or washers) or is it a sign of a bigger problem?
Most likely it is just the showerhead or washers that is worn. Start by buying a new showerhead and the problem should be resolved. It should work because that is what was happening to my showerhead, I replaced it and now it doesn't leak.