A skilled practitioner should be able to do enough damage to the follicle to stop hair growth while sparing the surrounding skin. If you have post-treatment healing concerns, talk to your electrologist and seek additional opinions. Each individual's tolerance level varies.
Some people find it uncomfortable while others are able to sleep during treatment.
Options for managing tolerance to treatment should be discussed on an individual basis. This really depends on the individual and the kind of growth that is present. Also, certain areas of the body are more delicate and must be treated at lower intensities. The most important thing to remember is that regular treatments are essential. The hair is much easier to destroy in the active stage of growth.