I'm sorry to hear about your predicament SeekingShiva and I would advise a medical check up. If all is well and it is a symptom of energy purification, causing the phenonmenon, I wouldn't worry about it too much. Although it's uncomfortable you're not alone since many others experience this.
Anyway, sorry I wasn't of much help, but maybe another forum member can offer something useful to alleviate some of the energy within that area that is causing the physical discomfort with an asana or mudra or something else.