Chafing is painful skin irritation caused by friction.
Prevention and Treatment of Chafing
Remove the source of friction—try different clothing in different cuts or different fibers. Avoid cotton, because it stays wet; synthetics are better. For chafed thighs, short Lycra tights may minimize friction. Women whose sports bras cause chafing should look for one with flat or covered seams.
Apply petroleum jelly or talcum powder to the sensitive areas to prevent further irritation, or cover the chafed spot with a bandage. (Also, look for special lubricating products formulated not to stain clothes, often available at specialty running stores.) When your nipples are the rub, try a Dr. Scholl’s product called “Corn Cushions,” which offer good protection from friction and peel off easily after your run.
Most Common Running Injuries