Hi and welcome to HCM
You seem to be suffering from an insect bite reaction with allergies and irritation on your skin.
Continuous scratching or itching could lead to infection of the bumps and rashes as well.
Firstly, don't use any harsh soaps or chemicals till the rashes subside. Apply a
calamine and
aloe vera lotion all over the rashes. It will help the irritation and also help heal them faster. You can do this 2-3 times a day.
Take an antihistamine like
benadryl once a day for a few days till the rashes heal and no new
allergy shows up. On the swollen , larger painful bumps you may need to apply a steroid-antibiotic cream for 5-7 days, like Fucibet.
The lesions will heal and may leave a few scabs or scars which should fade away.
Hope this helps you. If you develop new rashes inspite of treatment , or develop symptoms like fever or swollen glands, do
consult a dermatologist regarding follow up and also to check the improvement.