What should you know about poison sumac rash?

The rash can appear as red, swollen, itchy patches, bumps, or fluid-filled blisters. It may develop after a delay, so the plant exposure is not always obvious at first. The rash itself does not spread from one person to another, and fluid from blisters does not transmit the plant oil. Oil can remain on clothing, tools, shoes, or a pet’s fur and cause further exposure until those items are cleaned. Similar-looking problems include contact dermatitis, heat rash, and other inflammatory conditions.

Wash exposed skin promptly with soap and cool water, and launder clothing or gloves that may carry plant oil. Avoid scratching, because broken skin can become infected. Cool wet compresses, loose clothing, and a plain moisturiser may calm irritation. A pharmacist or clinician can advise whether an anti-itch product or prescribed treatment suits the affected area and your health history. Do not apply household chemicals or burst blisters.

Seek urgent help for trouble breathing, facial or throat swelling, faintness, or rapidly spreading swelling. Arrange medical assessment when the rash involves the eyes, mouth, or genitals, covers a large area, becomes very painful, or shows increasing warmth, pus, or fever. A clinician can also help if severe itch disrupts sleep or the diagnosis is uncertain.

Could this be poison sumac or another type of contact dermatitis? Which treatment is safe for my face or other sensitive areas? What signs would suggest infection or a stronger allergic reaction? How should I clean items that may still carry plant oil?