Hazard lights always blinking, will not turn off

Whether car is off and key removed or when car is running hazard lights or emergency flashers are always on. They act normal with clicking sound just like they should if turned on, but they are not turned on. The only way I can get them to go off is by pulling out fuse #18. When I do this the turn signals stop working as well. Lights all seem to be on and it is not flashing fast it is normal speed. Hazard light switch does nothing. Please advise.