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Hip/pelvis- not sure Back/torso/chest/rib cage - yes But only in my experience as not a medic If you try alternating between hot & cold might help as this is what family doctor recommended I use tea towels in freezer or microwave. Have a chat to your ms nurse they might be able to help or identify what it is could be gait issues 🤷‍♀️ hope this helps in meantime take care & good luck