Prickly Heat
Prickly heat is known as heat rush, a condition where prolonged sweating clogs the sweat ducts, bringing them to break open and leak sweat beneath the skin which results in red bumps. To prevent prickly heat you should try to stay cool as much as possible. If you play sports, try to choose cooler times of the day if possible. At the same time avoid tight fitting clothes, which trap sweat next to your skin.
Build up slowly to any related hot-weather activities and try to put yourself in a situation around cool temperatures after sports activities.
If prickly heat happens, you should try to relieve itching by taking a tepid shower or pouring a cup of white vinegar into a tepid bath while soaking in it. You can also use moisturizers that contain dimethicone to relieve the associated rash symptoms.