Redness, swelling, hard lump, and pus after mosquito bite
Redness, swelling, hard lumps, and pus after mosquito bites may be caused by decreased immunity, papular urticaria, allergic dermatitis, or other reasons. Treatment should be based on the specific cause. Details are as follows:
1. Decreased Immunity
Lack of nutrition or physical activity can weaken the body's immune system, leading to skin inflammatory reactions after mosquito bites, resulting in local redness, itching, and other symptoms. Under a doctor's guidance, medications such as pidotimod oral solution or Yupingfeng powder can be taken for treatment.
2. Papular Urticaria
After a mosquito bite, the skin may react to mosquito secretions, causing redness, swelling, hard lumps, and pus formation. Under medical guidance, topical application of erythromycin ointment or oral administration of levocetirizine hydrochloride capsules may be used for treatment.
3. Allergic Dermatitis
When a mosquito bites the skin and injects toxins into the body, it may trigger allergic dermatitis, causing symptoms such as skin swelling and pain. Under a doctor’s guidance, ebastine tablets can be taken, or topical applications such as cyproheptadine cream may be used for treatment.
In addition to the above causes, similar symptoms could also result from sebaceous cysts, lipomas, fibromas, or other conditions. Avoid scratching with hands and maintain cleanliness of the affected area.