I don't know if they are Bug bites?

I'm an Audio and video Technician and before I was a satellite installer over the years around the season of heat (spring and summer) a very localized eruptions caused me itch sensation that develop scar (I’m a bit obsessive scratching) originally i thought it was a fungus however the area affected was odd (the upper part of the feet {both of them} at the feet arch level and behind the heel) to be a fungus (not between finger nor nails) after that I thought was a mild skin allergy hypoallergenic products used no success now the eruptions are more like permanent but they are milder in cold season needless to say I work in attics the whole year