Symptoms in humans after bed bug bites

Symptoms in humans after bed bug bites mainly include: 1. Local reactions: The bite area may exhibit redness, swelling, itching, and pain, possibly accompanied by skin reactions such as erythema, papules, or wheals. These reactions typically appear quickly after the bite and may last for several days. 2. Secondary infection: If the bite area is not properly treated, infection may occur due to bacterial contamination, leading to increased redness and swelling, pain, and pus discharge. Severe cases may involve systemic symptoms such as fever. 3. Allergic reactions: In some sensitive individuals, bed bug bites may trigger allergic reactions, presenting as generalized hives, rapid breathing, throat swelling, facial flushing, and increased heart rate. Severe reactions may be life-threatening. 4. Neurological symptoms: In very rare cases, toxins or secretions from bed bug bites may cause systemic neurological symptoms such as numbness throughout the body, dizziness, nausea, or impaired coordination in the hands and feet.