Bitten by insects in summer, very itchy, with red spots appearing

Itching and red spots after insect bites in summer may be caused by skin damage, insect bite dermatitis, allergic reactions, etc. It is recommended that patients seek medical attention promptly and receive appropriate treatment. Specific analyses are as follows:

1. Skin Damage

If the local skin is bitten by insects such as bedbugs, lice, ticks, or mites during summer, it may result in skin injury, causing symptoms such as itching, swelling, and redness. Under a doctor's guidance, anti-inflammatory medications such as erythromycin ointment, mupirocin ointment, or fusidic acid cream can be applied to the affected area.

2. Insect Bite Dermatitis

Due to the increased number of insects in summer, insect bites may lead to insect bite dermatitis, resulting in localized redness, blisters, and itching. Under medical supervision, topical treatments such as butyl flufenamate ointment, dexamethasone ointment, or mometasone furoate ointment can be applied to the affected skin.

3. Allergic Reaction

Red spots caused by insect bites are usually related to skin allergies triggered by insect saliva injected into the skin. Due to the toxicity of certain insects, bites on areas like the arms can induce a stress response in the skin, leading to histamine release and resulting in symptoms such as red spots and itching. Patients may use calamine lotion or boric acid solution as directed, and take oral antihistamines such as loratadine tablets or cetirizine hydrochloride tablets under medical advice.

In addition to the above causes, similar symptoms may also result from folliculitis, papular urticaria, or localized infection. It is recommended that patients visit a hospital promptly for proper diagnosis and standardized treatment under medical guidance, avoiding self-treatment without professional consultation.