Hi...such old scars can look very different from chicken pox scars. If you really want advice then come to Mumbai. Your case will need individualised multi modal therapy. The treatment includes surgical procedures along with laser treatments. Seek out a dermatosurgeon who is actively involved with many international organisations.
Next Steps
to begin with contact Juvenis Clinic in Mumbai to get a video consultation with me. It will start the process of assessing your case and begin planning your treatment.