[header] How to prevent skin rashes [title] Avoid situations that lead to sweating. [step] Heat rash develops when the sweat ducts in your skin get clogged. When this happens, instead of evaporating, sweat gets trapped beneath the skin and leads to skin rash. 
[substeps] Heat rash occurs most often in hot and humid conditions. Keep your body dry by avoiding outdoors during the hottest time of the day.