Festered Insect Bite. With flakiness.

I was camping in wild in Goa and hence was exposed to numerous things including a few bites by insect/spider. I had extreme itchiness there and slowly they all developed in small mounds and watered a bit. The itchiness continued and on off I scratched them. I was expecting them to heal sooner but now it is past 4 months. I have like 4 such places where I was bitten. Recently I went for a dip in hot sulphar spring and since then they totally changed the look. The mounds have spread in small flat patches in the area and is constantly itchy & waters a bit. Skin keeps on drying up there & flakes. Also there are few other places where itching has started and the skin is getting is getting dried up there with flakiness.