If I come in contact with someone with scabies, should I treat myself?

Change & shower well. Since scabies mites have to get from one infected person onto another person, and then burrow into the new person's skin, changing and showering can help stop the transmission. For example, a person can wash his clothes and take a thorough shower after playing with others. That way, scabies mites can be washed away before they have a chance to burrow into the person's skin.