Not sure if it's caused by an allergy, but over the past few weeks I have been experiencing large red itchy bumps on random parts of my body over the course of the last couple of weeks. I have had three so far, one on my arm, one on my upper back thigh, and now one on my wrist. I have checked for spiders around the house to see if maybe I had been getting bit, but there's nothing. They resemble a mosquito bite at first, but then they grow into large hard itchy bumps.
Signs, Symptoms, and Diagnosis
Bedbug bites vary from itchy erythematous macules to itchy indurated papules, wheals, vesicles, or bullae, usually on exposed areas of the face, neck, and extremities. They tend to resolve within 2 weeks (Fig. 4). Bites often occur in groups of three, known as the “breakfast, lunch, dinner” pattern. Bedbugs do not transmit diseases.
Treatment of patients with bedbug bites is symptomatic, usually nothing more than topical coritocosteroids. Pesticides with dichlorvos, malathion, and pyrethrins are effective in eliminating bedbugs. Prevention of infestation can be achieved with repellents or permethrin-impregnated bed nets.
• Cimex lenticularis is the most common bedbug.
• An itchy nighttime dermatitis, especially grouped papules, should suggest bedbug bites.
• Treatment is symptomatic, such as topical corticosteroids.
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