Mosquitoes frequently target the lower extremities, specifically the ankles, due to a confluence of factors that make this area particularly attractive to these blood-seeking insects. The concentration of carbon dioxide, a primary attractant emitted during respiration, tends to be higher near the ground. This proximity increases the likelihood of mosquitoes detecting and targeting individuals’ ankles.
The ankles and feet also often harbor a greater density of bacteria. The metabolic processes of these bacteria release specific compounds, such as ammonia and lactic acid, which are known olfactory attractants for mosquitoes. Furthermore, the skin on the ankles is generally thinner and has more blood vessels close to the surface, making it easier for mosquitoes to access a blood meal.