Are sympathetic blocks useful for diagnostic purposes?
Sympathetic blocks are useful in the diagnosis of SMP. However, their value is limited by the potential for false positives (unintentional sensory block) or false negatives (insufficient SB). Adequate monitoring of the sympathetic and somatosensory function for a minimum of 90 minutes after the intervention is essential to ensure that a valid diagnosis of SMP is made.
Continuous wave KTP laser therapy is safe and highly effective for XP, although regular follow-up treatments are often necessary to maintain the achieved cosmetic results.