Likely bed bug (based on the clustered itchy bites; insect not visible)

Mattresses, bed frames, upholstered furniture, cracks, and other sheltered areas near sleeping hosts; found worldwide.

Blood-feeding ectoparasite, primarily consuming human blood at night; adults and nymphs feed.

Nocturnal and secretive, hiding by day and emerging from harborages to feed. Bites can appear as itchy red bumps, sometimes in clusters or lines, but bites alone cannot confirm an infestation.

They are not known to transmit disease efficiently, but bites may cause itching, allergic reactions, and sleep disruption. Inspect mattress seams, bed-frame joints, and nearby furniture for bugs, dark fecal spots, shed skins, or eggs; seek medical advice if reactions are severe.