If you have a swollen insect bite, it is recommended to avoid scratching the area as it may worsen the swelling. Applying a fragrance-free moisturizing cream like Aveeno and using cool water compresses can help with the discomfort. You can also use an over-the-counter hydrocortisone cream to reduce inflammation. If the swelling or redness spreads beyond a certain point or if you experience other symptoms, it is advisable to seek medical advice.