Generally speaking, bed bugs are more of a nuisance rather a major health threat. Their bites do cause itching and discomfort, however, and the scratching of bites may leave individuals vulnerable to secondary infections. Rarely, bed bug bites will cause allergic reactions. However, they are not known to transmit diseases to humans. While they do feed on human blood, they don’t transmit diseases like mosquitos, ticks or fleas.
The main concern for bed bugs is the stress due to their presence and associated discomfort from their bites. They can cause anxiety, sleep disturbance and emotional distress.