Flea bites are most common in people who keep pets at home or have poor sanitation in the house. When fleas bite the skin, they appear mainly on the waist, legs, abdomen, etc. The first bite may cause significant itching, and subsequent bumps the size of soy beans may appear at the bite site, often in a linear or grouped pattern. For more severe reactions, blisters may appear or cause papular urticaria, while relatively insensitive people may not develop bumps, but only pinpoint-sized red spots or petechiae. For patients after a flea bite, apply glyburide lotion to the affected area to relieve itching, but shake well before use. For more serious skin reactions, ask your doctor and follow medical advice to use antihistamines, such as Benadryl, iproniazid, loratadine, etc., or apply glucocorticoids, such as prednisone and prednisone, for treatment. Fleas are mostly carried by pets from the outside environment and grow and reproduce on pets, and then move around in the living environment, or due to poor environmental hygiene, darkness and humidity in the house breeding fleas, and appear to bite humans. Therefore, if a flea bite is confirmed, it is necessary to carry out a comprehensive flea removal operation for the living environment and the pet. For example, you can wear a regular flea collar for your pet; replace your pet’s supplies such as dog kennels and cat kennels. You can also do a thorough sweeping at home, spraying fenthion powder, rodenticide, etc. on the floor and corners, but be careful not to let your pet come into contact with it during the spraying process.