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A German dermatologist has debunked claims that human saliva can alleviate the itching caused by mosquito bites, according to a report by the Correctiv news outlet. The piece is part of their ongoing series “Gerüchtekiller,” which aims to dispel persistent myths and misinformation. This particular entry addresses the widespread belief that spitting into a bite could provide relief. The issue centers around Culex pipiens molestus, commonly known as the common biting midge, which plagues outdoor activities during summer. These insects are notorious for their irritating bites, often leaving behind itchy welts. While some claim that applying one’s own saliva to the affected area might soothe the discomfort, experts have refuted this notion. Professor Martin Metz, a dermatology expert at the Charité hospital in Berlin, explained that mosquito bites are essentially injections of the insect's saliva into the skin. This process introduces proteins such as histamine, which trigger increased blood flow and activate sensory nerves, resulting in the characteristic itch. Some individuals may even experience heightened itching due to allergic reactions to these proteins. Metz noted that while cooling the area, through ice or cold objects, can offer temporary relief, human saliva does not significantly reduce the sensation. He emphasized that the effect is minimal and that other methods are more effective. Cooling can also create a form of evaporative cooling through applied saliva, but again, the impact is limited. He further suggested that heat can be used strategically to manage the itch. Heat generates a pain signal that can temporarily override the perception of itching. This principle underlies the function of electric mosquito bite relievers, which apply heat directly to the affected area. However, Metz warned against relying on products containing antihistamines, as they may not penetrate deeply enough to be effective. He recommended alternative strategies for preventing and treating mosquito bites, including the use of targeted fans to deter mosquitoes, wearing long clothing, and employing repellents with either DEET or icariside II. Higher concentrations of these active ingredients tend to offer better protection. Additionally, certain essential oils, such as citron eucalyptus oil, have been found to help, though their effectiveness is generally lower compared to chemical-based repellents. The Correctiv report highlights the importance of evidence-based approaches over anecdotal remedies, urging readers to seek scientifically validated solutions for managing mosquito-related discomfort.