What if a person is bitten by fleas?

After being bitten by fleas, obvious itching and dark red rash will appear on the bite site. There will be a small blister at the top of the rash after scratching. Mild insect bite dermatitis can be self-healing. When the itching is severe, calamine lotion can be applied externally to relieve itching. At the same time, loratadine tablets can be taken orally to relieve allergic symptoms.