Scratching poison ivy blisters will not spread the rash. In addition, the poison ivy rash is not contagious; only urushiol (oil found in the sap of poison ivy) can cause a reaction.
There are three native American plants that collectively may be called poison ivy:
The resin in the plants contains an oily substance called urushiol. Urushiol is easily transferred from the plants to other objects, including toys, garments, tools, and animals. This chemical can remain active for a year or longer. It is important to know that the oils can also be transferred from clothing, pets, and can be present in the smoke from a burning plant.
The following are the most common symptoms of poison ivy. However, each individual may experience symptoms differently. Symptoms may include:
The symptoms of poison ivy may resemble other skin conditions. Always consult your doctorfor a diagnosis.
Specific treatment for poison ivy will be determined by your doctor based on:
Making sure you avoid the poisonous plants is the best treatment. It is important to teach your family members what the plants look like and not to touch them.
If contact with the plants has already occurred, you should remove the oils from the skin as soon as possible by cleansing with an ordinary soap. Repeat the cleaning with the soap three times. There are also alcohol-based wipes that help remove the oils. Wash all clothes and shoes also, because the oils can remain on these. You may use calamine lotion or oatmeal baths to help with the itching. Over-the-counter hydrocortisone cream or antihistamines may also help if itching is more severe.
If you have inhaled smoke from a burning plant, the blisters and rash are on the face, near the genitals, or all over the body, your doctor should be notified. You should also call your doctor if the rash covers a large area of your body, you can't sleep, or you have large blisters. Swelling is a sign of a serious reaction and you should contact your doctor right away, especially if the swelling is on your face or makes an eye close. If you have a serious reaction, you need to see a doctor right away. After a medical history and physical examination, your doctor may prescribe a steroid cream or oral steroids to help with the swelling and itching, depending on the severity of the rash.
Poison ivy cannot be spread from person to person by touching the blisters, or from the fluid inside the blisters. It can be spread, however, if the oils remain on the skin, clothes, or shoes. This is why washing your hands, clothes, and shoes as soon as possible is very important.
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