Hi your itch is not a symptom of any std but is very common to have an itch in that area is gets sweaty which forms bacteria and scratching with dirty finger nails keep it inflamed. When i have itch issues i use 1% cortizon cream with aloe which is over the counter.
i realized when I sweat around the area... super itchy
Yes it can be super itchy and the more we sctatch it the more irritated it becomes.