" Summer is finally here along with BBQs and trips to the park! Summer also, unfortunately, comes along with increased risk of skin irritation from poison ivy, poison oak, and poison sumac. These plants contain oil named Urushiol which causes itching, redness, bumps, and other symptoms of rash within 12 -72 hours of contact. Though rashes rarely become serious or life-threatening, severe reactions – which include swelling, blistering, and crusting skin – can occur and require urgent medical ...