Thanks for writing in.
You should not scratch any bug bite
. It is possible that your bug bite is getting infected by scratching. This can cause abscess
formation which gets tender and inflamed. You must apply neosporin
ointment and it will heal. Do not remove any scab formed. If its too painful, you must take pain killers and oral antibiotics
. Inflammation will take up to a week to come down.
Hope this helps