What is poison ivy rash?
- 1 What is poison ivy rash?
- 2 Is poison ivy rash contagious?
- 2.1 Poison ivy cannot transfer from person to person
- 2.2 Direct contact with urushiol cause poison ivy rash
- 2.3 Scratching the rashes cannot cause poison ivy rash
- 2.4 Poison ivy rash cannot transfer from one part of body to other part
- 2.5 Poison ivy chemical can transfer from gardening tools
- 2.6 Poison ivy can transfer from contaminated clothing and shoes
- 2.7 When is poison ivy plant not contagious?
- 2.8 What is the incubation period for a poison ivy rash?
- 2.9 How long does a poison ivy rash last?
- 2.10 When should I seek medical care for a poison ivy rash?
- 3 How to treat poison ivy rash?
A plant named poison ivy, poison oak and also called poison sumac contains a oil in it leaves, stems and roots. This oil contains a resin names urushiol which caused allergic skin reaction when comes in contact with the skin. The oil in the plant is irritant that cause allergic reactions and rashes on the skin. The oil can pass on to gardening tools, your shoes or on the golf clubs and can ultimately pass on to you. So it can pass to you in many indirect ways too. When your skin comes in contact with this oil, it starts causing itching, burning sensations and leads to skin rashes.
The rash developed due to the urushiol oil can lasts for few weeks. Washing off the affected area immediately can prevent the risk of getting a rash. Soothing lotions such as calamine and cool baths can help you to sooth the rashes at home. If a rash appears on face or genitals, you may need to see a doctor and get proper medications for this.
How poison ivy rash looks like?
It may look like severe rashes and fluid filled blisters with extreme itching and irritation.
What are the signs and symptoms of poison ivy dermatitis?
Symptoms of poison ivy dermatitis are as follows:
- Localized mild skin redness (erythema)
- Itchy skin
- More serious symptoms may include the following:
- Diffuse skin redness
- Severe painand/or itching
- Blister (bullous) skin lesions
- Secondary skin infections
The signs and symptoms of the poison ivy rashes can be reduced with the help of cortisone preparations and antihistamines like diphenhydramine (Benadryl), hydroxyzine (Atarax, Vistaril), or cimetidine (Tagamet).
Is poison ivy rash contagious?
As described above that only the urushiol (the chemical present in the leaves, roots, stem of the poison ivy) is responsible for the skin rash or the skin allergic reactions. It can not developed from the leaf and leaf surface of the plant. When a person comes in contact with the chemical urushiol, it starts itching and burning sensation on the skin and it ultimately leads to skin rash. Now there are several points that will clear the statement more clearly.
Poison ivy cannot transfer from person to person
Direct contact with urushiol on person’s skin is mandatory for developing the skin rash. If an affected person develops the rash due to chemical (urushiol), he cannot transfer the allergy to the other person.
Direct contact with urushiol cause poison ivy rash
But if there is chemical present on the clothes or shoes of the affected person and it comes in contact with the other person, he may also develop the rashes and skin reactions.
Scratching the rashes cannot cause poison ivy rash
Even the scratching of the rashes and the oozed fluid from the blisters cannot cause the allergy to other person because the chemical urushiol is not present in the blister fluid.
Poison ivy rash cannot transfer from one part of body to other part
Sometimes, one can see the presence of the rash on the other part of the body (sole of the feet) and can considered as a contagious rash, which is not true. Because the skin in the sole of the feet is thicker and it may take some time to appear a rash after coming in direct contact with chemical urushiol. So do not consider a rash contagious.
Poison ivy chemical can transfer from gardening tools
There are chances that you can re-expose to urushiol by touching the garden tools or any other contaminated object or the objects that were not cleaned after working with poison ivy. If any part of your skin comes in contact with the chemical urushiol, you should wash the oil from the skin and from the clothes as well with soapy water.
Poison ivy can transfer from contaminated clothing and shoes
You should try not to touch the oil and the rash as the oil present on the skin or clothes can transfer to other parts of the body such as eyes or mouth. Washing the exposed area within 20 minutes after exposure reduces the symptoms and signs of poison ivy rash
So, you should never consider a poison ivy rash contagious.
When is poison ivy plant not contagious?
Poison ivy is not contagious in itself; it may spread from the chemical urushiol present in it. A leaf surface of poison ivy can not cause any allergic reaction and is not responsible for rash. Sometimes it is considered as the poison ivy is contagious but the main culprit for causing skin reactions is the chemical present in it. The oil or the chemical can transfer on gardening tools or nearby objects, and when this chemical comes in contact with your skin, it can cause skin allergic reactions.
So until and unless you are not in contact with the chemical present in the poison ivy plant, you are not at all prone to any kind of skin reaction with this plant.
What is the incubation period for a poison ivy rash?
Before the appearance of the rash on the skin, poison ivy may take 5 to 21 days incubation period, as per skin experts or dermatologists. Rash can appear more quickly, in about 12 to 48 hours when your skin is exposed to the poison ivy again and again. No diagnostic tests are required for the diagnosis as it can be diagnosed with the help of patient history and physical exam only. Consequently, the diagnosis is made by likely exposure to poison ivy and the appearance of the rash symptoms and signs described above.
How long does a poison ivy rash last?
The symptoms and the rashes of the poison ivy resolve gradually over a period of time of one to three weeks. Rinsing or showering the skin with soapy water right after the exposure of the chemical is recommended by the dermatologists. It may help in prevent the risk of further contamination from the chemical (if present anywhere). A key to prevent the spread of poison ivy is washing of contaminated clothes immediately after exposure to chemical present in poison ivy. The rashes that caused by the poison ivy may take one to three weeks to disappear but the itching and pain will subsides quite earlier than the rash.
When should I seek medical care for a poison ivy rash?
Normally the symptoms and rashes of the poison ivy resolve within one to three weeks, therefore no medical care is needed. It can be easily treated with the home care treatment. However, some patients can be very sensitive or allergic to the oily chemical produced by the plant poison ivy, they should seek for medical treatment if they seek following symptoms or signs develop after coming in contact with oily chemical of plant poison ivy:
- Difficulty with breathing or trouble swallowing
- Swelling, especially around the eyes
- A rash develops on the face and/or genitalia.
- A rash covers most of an individual’s body.
- Nothing relieves the discomfort (itching, pain) of the rash.
Individuals with a poison ivy rash usually do not require medical care and have the symptoms resolve in about one to three weeks. Cool showers, cool compresses, calamine lotion, and/or hydrocortisone creams are some home care treatments that can prove beneficial in treating the rashes at home. If any blisters develop, simply leave them alone and do not scratch the irritated skin area.
How to treat poison ivy rash?
As described above, a person who got rashes due to oily chemical from ivy poison does not necessarily needs a medical treatment. Only if a person is sensitive and see severe symptoms of poison ivy needs medical care, otherwise it can be treated at home. Dermatologists have given several tips to cure itching and rashes at home, such as:
- Rinse your skin immediately with soapy water and wash our clothes right after you came in contact with oily chemical of poison ivy.
- Avoid touching the contaminated clothes and skin as they may contain chemical and can lead to skin irritation.
- If you see another rash on any other part of the body, it may be due to re-exposed to poison ivy. Therefore washing the affected area and clothes are very important.
- Avoid scratching the affected area as it can also lead to infection.
- If you have the blisters, do not remove the overlying skin. As the overlying skin protects the underneath wound and prevent it from further infection from surrounding bacteria.
- Lukewarm but short baths are beneficial in easing the itch caused by the poison ivy. Add a cup of baking soda in the bathing water and merge the affected area into that water.
- Another remedy you can see is colloidal oatmeal preparation that you can find on a local drug store. You have to add the preparation in the Luke warm water and bathe with it.
- Apply naturally cooling and soothing preparations such as calamine lotion, it will help in relieving the itch and burning sensation as well. A hydrocortisone crème can also help.
- Cool compresses can be used to apply over itchy skin. Make a cool compress by wetting a cloth with cold water. It will help to relieve the itching on the skin.
- You can consider taking antihistamine pills. They are known to inhibit the histamine (an allergy causing chemical). They stop the allergic reaction of the skin and stop worsening the condition such as rash and itch.
How can poison plant reactions be prevented?
Poison ivy plant reaction can be prevented with the following tips:
- Avoid contacting poison ivy, in order to do so; you should learn to identify the poison ivy plant, poison oak, and poison sumac.
- Cover your skin as much as possible by means of wearing long pants, long-sleeves, shoes, and socks while walking in the woods. Or if you are working in the areas where this plant can grow.
- Animal’s fur can also carry the chemical urushiol when they come in contact with poison ivy, so you should avoid taking your pets to the poison plants exposed area.
- In order to prevent the recurrences of the poison ivy, poison oak, or poison sumac rash, allergy shots are also given.
- Allergy shots proved ineffective in many cases therefore such shots are preserved for the cases which are extremely sensitive.
Preventing poison ivy from spreading
When somebody comes in contact with poison ivy, the allergic reaction start within 12 to 48 hours, you can see redness, swelling and extreme itching on the affected area. The allergic reaction is usually accompanied with formation of blisters, often in a linear configuration. The most common and severe complication is itching.
If contact with poison ivy is made it is important to thoroughly wash skin and clothes immediately. The resin can remain active for several months on clothing or other objects if not washed.
Allergy shots proved ineffective in many cases therefore such shots are preserved for the cases which are extremely sensitive. Because they are proven not very effective therefore they are not currently available. There are many other topical preparations which can acts as a barrier and should be applied to the skin before exposure to the plant poison ivy. Some examples of these preparations are Ivy block etc. Long sleeves, full pants and proper coverage of skin is also mandatory before stepping out into the poisonous plant prone area. Over the counter preparations such as oatmeal or baking soda baths and calamine lotion are also beneficial in relieving the symptoms of poison ivy. Topical preparations are not beneficial in treating the severe cases. Steroid creams and steroid injections are beneficial in treating such cases.
What should I do if I am exposed to a poison plant?
If you think you may have been exposed to a poison plant, you should:
- Remove your clothes.
- Wash all exposed areas with cool running water. Use soap and water if possible. Be sure to clean under fingernails. In the woods, the water of a running stream can be an effective cleanser.
- Wash clothing and all gardening tools, camping gear, sports equipment, and other objects that came into contact with the plants.
- Plants exposed pets should be bathed properly.