In general, after an insect bite, it is important to minimize picking and scratching at the rash as this can aggravate the swelling and increase the risk of scarring.
It is also important to prevent infection and keep the area clean. Topical antibiotics may be helpful especially of there is a wound and overlying redness.
Some people may develop an exaggerated insect bite reaction and the area of the bite can become very inflamed. Topical steroids can help reduce the inflammation.
For the current scar, this should usually get better with time. Silicone based scar gels may help in the healing. You can consider seeing your doctor for a proper assessment of the scar to advice you further on the treatment options.
