Cryolipolysis and Delayed Posttreatment Pain

Cryolipolysis is a popular noninvasive treatment for areas of excess adipose deposition, such as in the abdomen and flanks. During the 60-minute procedure, a uniquely shaped treatment applicator is applied to the area with suction, causing cold exposure–induced crystallization of adipocytes through apoptosis. Overall, cryolipolysis treatment has a good safety profile and is well tolerated by patients without the need for anesthesia. A rare side effect of cryolipolysis is paradoxical adipose hyperplasia, which has been reported to be more common in men. Another rare adverse effect is the development of substantial posttreatment pain. Most patients usually experience minimal posttreatment discomfort and the phenomenon of delayed posttreatment pain rarely has been reported in the literature.

An online article published in Dermatologic Surgery in November evaluated posttreatment pain. Keaney et al performed a retrospective review that looked at the incidence of posttreatment pain after cryolipolysis as well as any correlating factors among patients that experience this pain.

In this retrospective chart review, 125 patients who received 554 consecutive cryolipolysis procedures over 1 year were evaluated for at least 2 of the following symptoms: (1) neuropathic symptoms (ie, stabbing, burning, shooting pain within treatment area), (2) increased pain at night that disturbed sleep, and (3) discomfort not alleviated by analgesic medication (ie, nonsteroidal anti-inflammatory drugs, narcotics). In these patients, 114 treatments were performed on 27 men and 440 treatments on 98 women; 36.6% of treatments were performed on the lower abdomen, 34.7% on the flanks, 11.9% on the upper abdomen, 9.4% on the back, 6.0% on the thighs, and 1.4% on the chest. A small cryolipolysis applicator was used for 95% of the treatments and a large applicator for 5% of the treatments.

Of 125 patients, 19 (15.2%) developed delayed postcryolipolysis pain and all were female patients. These patients received a total of 75 treatments (3.9 treatments per patient). All but 1 patient developed pain on the abdomen. One patient had pain on the flanks only. Three patients had pain at multiple sites (eg, abdomen and flanks, abdomen and thighs). Younger women (average age, 39 years) were more likely to have posttreatment pain. The number of treatments did not correlate with the development of pain. The average onset of pain was 3 days, with an average resolution time of 11 days (range, 2–60 days). Three patients underwent a second cryolipolysis treatment in the same area, which induced delayed pain again. Six patients underwent treatments on other body regions and did not develop pain.

Although postcryolipolysis pain is self-limiting and self-resolving, it can still be debilitating in some cases. Keaney et al managed the posttreatment discomfort with compression garments, lidocaine 5% transdermal patches, low-dose gabapentin, and/or acetaminophen with codeine. Low-dose oral gabapentin appears to have a good effect in pain treatment for these patients, which had a complete response in 14 patients as the sole treatment. Interestingly, 2 other large patient series were reported, with 518 patients in one study (Dermatol Surg. 2013;39:1209-1216) and 528 treatments in another study (Aesthetic Surg J. 2013;33:835-846); there were only 3 reports of mild to moderate pain.

What’s the issue?

Delayed posttreatment pain seems to be a common phenomenon, affecting primarily younger women who have had cryolipolysis of the abdominal region. It is reassuring that this pain is self-limiting and that it is responsive to oral gabapentin treatment. However, it is important to discuss this possible not-so-rare side effect with patients considering this treatment. Do you discuss delayed posttreatment pain with your cryolipolysis patients?

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