Skin cancer treatment
Radiation treatment affects only a small area of skin and will not make you feel unwell. For a few weeks after treatment, the treated skin will be red and inflamed. During this time it will look as though the treatment has made things worse rather than better. Try not to be worried about this. After a few weeks the area will dry up and form a crust or scab. Over another week or so the scab will peel away leaving healed new skin underneath. It is important not to pick at the scab. At first, the new skin will look pinker than the skin around it.
Some patients’ skin will have a tan in the area where radiation was given. This will gradually fade, and the treated area will look like the skin around it, although it can eventually be slightly paler.
Source: Cancer Backup 2008