Subcision, which I have been performing with gratifying results since 1995, is a quick and relatively inexpensive technique for elevating and smoothing all kinds of depressed scars, including those from chickenpox. It has a proven track record for safety and efficacy in all skin types. On occasion the side walls of the scar may need to be additionally smoothed with TCA CROSS, another quick and simple procedure with a proven track record for safety and efficacy in all skin types that I have been using for twenty-three years since it was first introduced. No doubt, you will be asked to consider surgical excision--i.e. scar revision surgery. However, in areas subject to motion or skin tension, such as this location, there is a considerable risk for the subsequent development of an unsightly stretch scar and even tram track stitch tracks. And you may also be offered this or that expensive, "bells and whistles" fraxel laser or RF device treatment. It is worthy to note that the hard science to support the use of these supposedly "next big thing" gizmos lacks woefully behind the heavy device manufacturer or social media influencer-backed hype to promote them. You would be wise to consult with an experienced, board certified cosmetic dermatologist scar specialist. Best of luck..