question: my sister made the mistake of her life by using meth last weekend, it was from what she says for the whole weekend not just a day, she has a rash going from the left side of her neck to her armpit and a swollen gland only on the left side of her neck, its red from rubbing it, itchy, and small pimples without heads scattered, she has only itched not picked where they are, its been a whole week now and its not getting worse or better, what can be used to help them go away and is it contagious to someone like me who is around her but hasnt used?