Can insect bites also cause dermatitis?

Jul 18, 2024 Source: Cainiu Health
Disease description:

I am 25 years old. Recently, as the number of insects has increased, my body has been bitten, resulting in pimples, redness, swelling, and itching. Some cases have even developed into inflammation. I would like to know whether insect bites can also cause dermatitis?

Doctor's answer (1)
Dr. Wang Xiaoyan
Insect bites can indeed cause dermatitis, a condition medically known as insect-induced dermatitis. Insects inject their highly acidic, alkaline, or toxic substances into the human body through bites, triggering allergic reactions and acute skin inflammation. Specific symptoms may include redness, swelling, itching, and pain on the skin; in severe cases, blisters or pustules may also appear. Common insects that cause dermatitis include mosquitoes, caterpillars, and rove beetles. Treatments for dermatitis caused by different insect bites vary, but generally can be improved with topical medications such as erythromycin and Bai Du Bang (fusidic acid). It is also important to maintain local hygiene, avoid scratching, and prevent worsening of the infection. In severe cases, prompt medical attention is recommended.