Given and received.
The experience depends a lot on what’s being irradiated.
The non-stochastic effects tend to be reasonably predictable. Clearly I’m out of date with the lingo though.
[edit] just spotted the post: Jaw and Neck. You’ll perhaps be fine for the first couple of weeks. As the dose to the soft tissues ‘builds up’ you’ll notice what’s described in a few sources as ‘reddening’. Think sunburn rather than warm fire. Outside and in. I had my neck irradiated and had a quite harsh ‘sunburned’ throat – on the inside.
Depending on how the dose is set up with the beams and any other modifications you can expect some effects on beard growth in future. I have a smooth, hairless rectangle over the angle of my mandible preventing me from fulfilling my hipster potential.
Longer term you can get telangiectasia which some folks find unsightly. It can be treated.
This info is OK.
You’ll be fine unless the ‘reddening’ interferes with eating or speaking.