What should you do if a victim develops a rash after contact with poison ivy?

Using lotions like Calamine is appropriate because Calamine lotion can help soothe the itching and irritation caused by the rash from poison ivy. This type of lotion works by creating a barrier on the skin, which can provide relief from the discomfort associated with rashes. It also has a mild astringent effect, which can help to dry out weeping blisters and reduce irritation.

In the case of poison ivy exposure, it's important to treat the rash properly to alleviate symptoms and prevent complications. While some rashes may heal on their own, topical treatments like Calamine are beneficial in managing the associated discomfort and promoting healing. Choosing to ignore the rash may lead to prolonged discomfort, and ice application can cause complications like frostbite if applied directly to the skin. Keeping the area dry is relevant but isn’t the primary treatment; it does not provide the soothing relief that a lotion offers.