Disclaimers: This isn't medical advice. Don't hurt yourself.
It's only bad for you if you burn yourself. There was a study a couple of years ago showing a strong correlation between application of heat on insect bites and a reduction in percieved itchiness.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10309056/
My pet theory is that two things are happening.
- The mechanisms for sensing itch and heat from our skin overlap and can interfere with each other.
- Transferring heat quickly enough breaks down the chemical or cocktail causing the itchiness. My best guess is that the heat denatures them ( https://en.wikipedia.org/wiki/Denaturation_(biochemistry) ) or the sudden shift provides a shock that's disruptive enough to get the job done. Like moving something from hot, to cold, to hot again when sanitizing.
The linked study suggests my first conjecture is, at least, a reasonable explanation for the immediate relief we feel.
Itch and pain, distinct sensations with specific receptors and mediators involved, interact with each other. A painful stimulus, such as noxious heat, causes the inhibition of itch signalling.
There are a few recent studies floating about which address aspects of mosquito bite itchiness pathophysiology. We still don't know exactly why that happens though. Without that info I can't draw the same conclusion for my second conjecture.
Anecdotally I've found success treating mosquito bites by
- Heating water while putting something cool on the bite
- Once the water is near boiling: taking the water off the heat and letting it cool to ~60Β° C / 140Β° F
- Soaking a bit of metal in the hot water until the metal heats up
- Touching that hot metal to the bite for a few seconds.
A fork or knife works fine. Anything that will radiate the heat away from itself and into the skin quickly. Ice or cold water works for the cooling bit. I've also used an ice cold metal can a few times.
If the metal is too hot it can cause a burn. antiscald.com has a nice chart for this: https://antiscald.com/index.php?route=information%2Finformation&information_id=15
If we reference that table alongside the Denaturation wiki article's chart we can identify the line we're towing. We want something hot enough to kill the itchiness but not so hot it'll damage our skin. 55Β° C applied to the mosquito bite for five seconds or so seems to do the trick. Your mileage may vary.
I've found it's the movement and change of context that helps me. Taking a walk, going for a ride, or even just moving to a different room helps my brain kick out of one of these ruts. Dancing is a high energy option that I'm not always ready for but, when I am, it's very cathartic. π
ADHD is a spectrum (as is all neurodiversity) but one of the neurochemical commonalities between people who meet the diagnostic criteria for ADHD is disregulation of norepinephrine. Getting on meds that work and engaging a therapist who can help develop better emotional tooling and coping mechanisms can be life changing. One of my coping mechanisms is changing the scenery. Norepinephrine is a precursor for a whole bunch of essential chemistry so engaging other systems that need it seems to help other areas.
Everyone is different but I've found that if my brain is stuck then my body is usually stuck as well. Unstick the body and, after a while, the brain wants to follow.
When nothing sounds satisfying and I have no gumption whatsoever I can introduce something locally novel in an attempt to kick things into gear again. Executive dysfunction can make choosing from options tough (or temporarily impossible) but, on not-the-worst days, I can at least stand up and start walking aimlessly until I start to feel different. Walking outside tends to help the most.
It's nothing strenuous or fitness focused. Just a leisurely stroll around the bedroom, yard, neighborhood, etc. After a bit I usually feel like doing something. Even if that's just more walking at least it beats mean mugging the wall until I want to cry or sleep. Usually I end up doing something I wanted to do earlier in the week though.