Just my opinion...but given your negative response in other areas I would strongly recommend against the use of ice anywhere else. Short term numbing might feel okay at the time...but the long term results of use could be a disaster. Like I said before...my own experience after being told to ice my initial RSD site for months was that it made things worse and caused the condition to progress faster (and greatly lessened the likelihood of remission once I finally got the treatments I needed). Much better in my opinion to play it safe and work towards remission in those areas that aren't as bad vs taking the risk of potentially sabotaging your chances at remission through the use of ice now. Not trying to scare you...but that's how I view things especially in your situation where the ice DOES negatively affect you in the worst areas.