Son constantly getting high temps.

[Vampy1986]

DS (nearly 5) has had tonsillitis requiring antibiotics multiple times since he was really small. Along with the usual ear and chest infections. I'd say approximately 13 times in the past year he's had tonsillitis requiring meds, three courses of antibiotics in December alone, and two in January.

As soon as he finishes one course of antibiotics, give it a week or so, and he spikes another high temp, and his tonsils flare up again. It baffles me as he seems fine then crashes, becomes twitchy and then spikes a temp seemingly out of nowhere...He has a referral to ENT so playing waiting game at the moment for tonsils to be taken out but I’m worried, panicking something is wrong with his immune system. I know kids get viral high temps as well as bacterial temps, but I feel uneasy.

Has anyone else experienced this?

Ds had almost constant ear infections from age 10 weeks to 6.5 years except the times he had grommets.
After that he started getting fewer ear infections, but bad tonsillitis. He'd have a temperature and do a complete flop where he couldn't even stand up for around 18 hours, then he'd recover.
After one of these tonsillitis episodes (aged 8yo) he started getting regular temperatures (almost every afternoon) and fatigue (school used to phone me to pick up about midday and he'd be asleep before we got home).

He had lots of blood tests, MRI scans and all sorts. Nothing was ever found, and they concluded that it was simply post viral fatigue.
It took him about a year to come mostly out of it.

But there wasn't anything worse going on.