Sadly the only other mention I've ever seen is the fictional series "Better Call Saul". And the character's suffering was depicted as entirely mental.
That's because it is entirely mental.
Blind tests were done on people, and their ability to recognise a radiation source was the same as random picking.
Anybody claiming to be able to sense radiation can be tested simply by taking two mobile phones, turning one off (leaving one connected to the internet and doing something online), putting both in a bag/under a bucket/..., having someone else randomly swap their position and trying to guess which is the one that is radiating at the moment. I can guarantee you're guesses will be around 50% in the long run, so basically random guesses.
My ammature theory (5Ghz wifi feels worse than 2.4Ghz wifi) also says higher frequency for short range signals does more harm, thus it's more sensitive to turn those off than being exposed to other lower frequency used outside.
I hate to admit it, but I seem to notice effects when I add wireless networks to my home. I think it's probably psychosomatic, but would like to do a blind test. I would situate myself between wireless devices, with all devices within 10 meters either being on or off, the test being to determine if any devices are on. I would feel weird asking anyone to help in this, so perhaps I'll rig something up with smart plugs or a programmable router.
I think northern Europe has recognized EM hypersensitivity as a symptom but last time I checked, it's not widely recognized worldwide.
I can completely say this is not mental. Like, say I get a new phone which I wanted to buy and then if it damages me, I regretfully have to sell it. Also I can feel better by turning off Bluetooth, so there are clear physical causes for me.