Reflex sympathetic dystrophy: electronic thermography as an aid in diagnosis.

Reflex sympathetic dystrophies can be distressing conditions for patients as well as physicians. In the full-blown case, the diagnosis is easy to make; however, many more subtle forms of reflex sympathetic dystrophy exist. In the full-blown case, diagnosis may be quite simple when the physical findings are present. In the more subtle forms, however, one must have a high index of suspicion in order to make the diagnosis. Clinical testing, such as stellate ganglion blocks, may or may not be helpful. Electronic infrared thermography emerges as a helpful tool in the aid to diagnosis. We have presented several cases in order to illustrate this.