The main symptom of poison oak, ivy, or sumac is an intensely itchy, red rash. The rash appears within 24-72 hours of exposure to the oil. The rash often appears streaked and may develop into oozing blisters. The oozing material will not sensitize others.
The skin rash may cause discomfort. It is not serious, though, and usually resolves on its own in 1-2 weeks. However, you should contact a doctor right away if you are highly sensitive or have the following symptoms:
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