What Does It Mean When a Mosquito Bite Swells Into a Large Hard Welt?
1. Introduction When a mosquito bite swells into a large, hard welt, it indicates an exaggerated, localized allergic reaction known clinically as Skeeter syndrome. This pronounced swelling is driven by an intense immune system response to the complex salivary proteins injected by the mosquito during a blood meal. The rapid release of histamine and other … Read more