You�ll know when you have an allergic reaction to poison ivy! Symptoms include itching, burning, and redness in the affected areas of your skin. Within a few hours or as long as five days after contact, you will develop small blisters. As time passes, the reaction can become severe dermatitis, with larger blisters, swelling, headache, and fever. Symptoms depend on the severity of the allergic reaction. Inhaling urushiol from smoke or soot may result in much worse symptoms which could require hospitalization. |