A: Some cases can be reversed if CRPS is treated within the first six months it can be reversed. The major treatment of CRPS is mobilization of the affected limb. The natural response to pain is to not use the limb but this can actually make things worse. Treatments with medications and other adjuncts may help with the mobilization.
For the upper limb, scrubbing is a useful type of mobilization, for the lower limb walking is useful.
Desensitization therapy is also useful. In this therapy your limb is exposed to a variety of touches.
It is important to realize that while pain normally means there is ongoing damage, in CRPS if you have increased pain due to activity, you have not damaged anything (and may be helping yourself).
Relaxation, hypnosis and biofeedback may be useful.