Everytime I start sweating whether it be from exercising or eating spicy foods, I start feeling an intense itch in areas like my scalp, chest, and back. I'm not exactly sure what's causing this. I have suffered from eczema in the past but this time there is no rash and none of the hydrocortizone ointments have worked to stop the itching. Whenever I rub the itchy areas to calm the itch, my skin turns very red temporarily. The itching lasts for about 5 minutes and then goes away. Does anyone know what may be causing this and what I can do to prevent it? Any help would be greatly appreciated.