Toxicodendron pubescens (Atlantic poison oak), one of a large number of species containing<unk>  irritants.<unk>  is caused by<unk>  with a plant or any other object containing<unk>  oil. The oil adheres to almost anything with which it comes in<unk> , such as towels, blankets, clothing, and landscaping tools. Clothing or other materials that touch the plant and then, before being washed, touch the skin are common causes of exposure. For people who have never been exposed or are not yet allergic to<unk> , it may take 10 to 21 days for a reaction to occur the first time. Once allergic to<unk> , however, most people break out 48 to 72 hours after<unk>  with the oil. Typically, individuals have been exposed at least once, if not several times, before they develop a rash. The rash typically persists one to two weeks, but in some cases may last up to five weeks.<unk>  is primarily found in the spaces between cells beneath the outer skin of the plant, so the effects are less severe if the plant tissue remains undamaged on<unk> . Once the oil and resin are thoroughly washed from the skin, the rash is not contagious.<unk>  does not always spread once it has bonded with the skin, and cannot be transferred once the<unk>  has been washed away. Although simple skin exposure is most common, ingestion of<unk>  can lead to serious, systemic reactions. Burning plant material is commonly said to create<unk> -laden smoke that causes a systemic reaction, as well as a rash in the throat and eyes. Firefighters often get rashes and eye inflammation from smoke-related<unk> . A high-temperature bonfire may incinerate<unk>  before it can cause harm, while a smoldering fire may vaporize the volatile oil and spread it as white smoke. However, some sources dispute the danger of burning<unk> -containing plant material.
Urushiol-induced contact dermatitis
Phototoxic tar dermatitis
Allergic contact dermatitis
Blister beetle dermatitis
Autosensitization dermatitis
Rodent mite dermatitis
Contact dermatitis
Irritant contact dermatitis