black spot poison ivy

black spot poison ivy


If you or those around you are allergic to poison ivy and if you have skin rashes after contact with a plant called poison ivy and this issue worries you, we recommend that you read on.

Read more if you want to know more about rashes caused by poison ivy allergies

What is poison ivy?

What is an allergy caused by contact with poison ivy?

What are the manifestations and characteristics of skin rashes in allergy to poison ivy?

Why do people get allergies after contact with poison ivy?

You will find the answers to the above questions below



Skin rash caused by contact with toxic ivy

What are the symptoms and manifestations of contact with poison ivy?

What are the causes of poison ivy rashes?

What are the first risk factors for poison ivy rashes?

What are the side effects of poison ivy?



What are the best home and lifestyle treatments for poison ivy rashes?

What are the prevention methods?

When should you see a doctor?




People can develop complications following an allergic reaction to an oily resin found in the leaves, stems and roots of these plants following contact of their skin with poison ivy, poison oak and poison sumac. Therefore, if a person comes in contact with these plants, it is recommended to wash your skin immediately so as not to provide an opportunity for allergic reactions and rashes and skin rashes caused by allergies.


Skin rash caused by contact with toxic ivy

Skin lesions following contact with oil in the leaves, stems and roots of plants such as oak ivy and poisonous sumac can cause certain skin lesions, and in fact there is an oily resin in different parts of these plants that causes these allergic reactions. The scientific name of this oil resin

Urushiol‎ u Roo she ol.

If this substance comes in contact with the skin of the body, you should wash your face immediately, unless the person is not allergic to this substance. Washing the oil may reduce the chances of you having an allergic reaction to this oily resin. However, you may still have allergies, the itching may be severe and annoying, and it may last for weeks. In cases where these rashes appear milder, treatment and, in fact, supportive care will alleviate those skin lesions.

Healing itching lesions can be done with soothing lotions and cool baths at home.

But if for any reason the rash was more severe and extensive or there was severe and unbearable itching, especially if your lesions were on the face or genitals, you will most likely need medication prescribed by your doctor.

In this article, we want to make you more familiar with skin rashes caused by contact with toxic ivy. In the following, we will explain the symptoms, causes, as well as their side effects and treatment to some extent.


What are the symptoms and manifestations of contact with poison ivy?

The most common clinical sign and manifestation of rash caused by contact with poison ivy is itching. The following signs and symptoms all occur:

  • These rashes are red
  • They have a lot of itching
  • They have inflation
  • And can be blister-like
  • Also, if a person inhales the smoke from burning poison ivy, poison oak, or poison sumac, he or she may develop respiratory problems.

Doctors believe that when a person suffers from a rash and skin lesions following contact with poison ivy, this skin lesion has special characteristics. One of the characteristics of this rash is that following the plant's contact with your skin, this rash will form in a straight line, but if a skin rash develops after touching a piece of clothing or, for example, a pet that has an oily resin ,The lesions can spread, and you may have rubbed this oily resin or Urushiol‎ on other parts of your body with your finger.

It is questionable when this allergic reaction occurs after contact with these plants. The reaction usually begins 12 to 48 hours after exposure to plants such as poison ivy, poison sumac and poison oak, and may take 2 to 3 weeks and in general, we must say that the severity of the symptoms and itching of these rashes depends on the amount of erosion that has come in contact with your skin.


What are the causes of poison ivy rashes?

Itching and skin lesions caused by contact with poison ivy are due to an allergic reaction that the body has given to an oily resin called Urushiol‎. In addition to poison ivy, this substance is also found in poison oak and poison sumac. This oily resin is a very viscous material, so it will attach very easily to the skin, tools, equipment, clothes, as well as the skin, wool and fur of your pets.

Individuals receiving reactions from poison ivy, poison oak, and poison sumac may receive the following ways:


  • Touch the plant

If a person has touched the roots or fruits as well as the stems of these plants, they may react.


  • Touch objects contaminated with Urushiol‎ oil resin

If a person walks through pastures and meadows and then touches his shoes when he takes off his shoes, he may get a very sticky Urushiol‎ in his hands, then he may rub his infected hand on his face and body parts, and In this way, this urushiol will stick to other parts as well.

A very interesting point is that if, for example, uroshiol is on your shoes and if this very sticky oily resin is not washed off, it can cause allergic skin reactions and itchy skin rashes even years later.


  • Inhalation of smoke from burning these plants

Research and statistics show that if a person inhales the odor of burning poison ivy, poison ivy, and poison oak, smoke can irritate and damage a person's nasal passages, throat, and lungs.


It should be noted that secretions from rashes as well as blisters caused by allergies to poison ivy do not contain allergens or oily resin, and these secretions do not cause the rash to spread, but if the plant resin is on the body ,or if it is contaminated on shoes and clothes and comes in contact with different parts of the body, it can cause the spread of these rashes.


What are the first risk factors for poison ivy rashes?

People who do most of their outdoor activities will be more at risk of exposure to poison ivy, and In fact, these people are the ones who have the following experiences more than others in their daily routine:

  • People who camp and pitch tents
  • People whose job is to install telephone line cables
  • fire fighters
  • People who are farmers
  • People who do construction
  • People who fish
  • Gardeners
  • Foresters
  • Environmentalists
  • As well as people who are accustomed to walking in the open air and in the pristine nature


What are the side effects of poison ivy?

If the poison ivy is scratched by you following a lot of itching, the bacteria under your nails may contaminate the skin, because when the skin is scratched, the skin's defense barrier is weakened and it becomes easier to transfer infectious agents from the surface to the depths.  Be sure to see your doctor if you notice pus coming out of your skin rash.

Do not forget that respiratory problems as well as inflammation and swelling of the membranes of the airways from the nose to the inside of the lungs can lead to inhalation of Urushiol‎.



We must say that to diagnose rashes caused by contact with toxic ivy, the doctor will diagnose the problem by looking at your skin and according to the description you provide, and generally there will be no need for further testing for this diagnosis.

So, in general, we must say that the diagnosis of allergic rashes caused by contact with toxic ivy will be a clinical diagnosis that will be determined by a doctor following a detailed history and observing the lesions.



Treatment for rashes caused by contact with poison ivy is self-care methods that a person can do at home, and in general, on average, the lesions will disappear within two to three weeks. If a person has severe itchy skin and rashes that cause large blisters, your doctor may use oral corticosteroids, such as prednisone, to reduce inflammation and swelling. If bacterial infections develop at the site of the lesion following bacterial overgrowth of the lesion, your doctor will control the infection with a suitable oral antibiotic that he or she prescribes for you.


What are the best home and lifestyle treatments for poison ivy rashes?

I have to say that the rashes caused by poison ivy and the itching caused by these skin lesions will eventually go away on their own, but it is very important that the person copes with the severe itching, and that constant itching can interfere with sleep. If the blisters are scratched, they can become infected. Here are some ways to control itching.

You can use a corticosteroid cream or ointment for the first few days

We emphasize that the type of corticosteroids you use must be approved by your doctor

Use calamine lotions or calamine creams, as well as other products that contain menthol and relieve itching.


Use oral antihistamines such as Diphenhydramine, which is available under the brand name Benadryl. These antihistamines can help you sleep. Over-the-counter antihistamines that do not make you drowsy and are of the new generation can be effective. Loratadine and Cetirizine can be mentioned.

To relieve itching, you can soak the itchy area in a tub filled with cold water. You can pour half a cup or 100 grams of baking soda or bath salt, which is available in pharmacies and is used to relieve itching, in bathtub water.

These products that are available in pharmacies are based on oatmeal (Aveeno).


It is recommended to apply cool compresses several times a day for 15 to 30 minutes on itchy areas to relieve itching.

In most cases, you do not need medical treatment for itching caused by poison ivy , unless your rash has lasted more than three weeks, is infected with bacteria, is infected, or is very widespread.


What are the prevention methods?

To be safe from contact rashes caused by contact with poison ivy and sumac ivy, it is better to observe the following points:

  • Avoid direct contact with plants as much as possible
  • It is recommended that you identify the appearance of poison ivy, poison oak and poison sumac when walking or doing other outdoor activities. Try to move and work on paths that have been cleared of plants. Wear tights and clothes when you are out of the house. Also be sure to set up tents when camping and staying in nature, you are set up in areas that have been cleared of these plants


  • Also, if you have a pet and take them with you to forest areas and outside, Be sure not to let these animals run in the woods and drag themselves on the ground so that urushiol does not stick to their fur and skin and is not transferred to your skin after being touched by your hands.


  • Wear protective clothing If you have to travel in areas full of plants, be sure to wear thick socks, boots, long-sleeved clothing and gloves, be sure to wear long pants to protect your skin.


  • Try to get rid of plants Poison ivy. It is better to clean your yard and garden. Therefore, it is necessary to know these plants and their appearance in each season, and be sure to remove them from the ground using herbicides or other agricultural equipment. Be sure to root them.


  • Be sure to wear thick gloves when using herbicides and other agricultural implements, and thus get rid of these plants, and after that, be sure to carefully remove the gloves and wash them carefully, as well as your hands.


  • You should not burn poison ivy and plants that can cause allergies, In other words, they contain urushiol because these resins are portable by smoke. It is recommended to wash the skin and fur of your pets.


  • It is recommended that if you are exposed to urushiol, use soap and water up to 30 minutes after contact, wash the area and gently remove harmful resins from the skin. You should also wash under your nails and it is said that even if you wash after about 60 minutes, it can help reduce the severity of the rash caused by urushiol.


  • Be sure to clean contaminated objects. If you think you have come in contact with these plants, you should immediately wash your clothes with thick gloves and wash them in warm soapy water, ideally in the washing machine. Contaminated clothing should be carefully removed and should not come into contact with your body, furniture, carpets and appliances to prevent transmission of urushiol.


  • Other parts and objects may also have come into contact with this vegetable oil or vegetable resin. For example, outdoor items, garden items, jewelry, watches, shoes and shoelaces should also be cleaned. urushiol can stick to surfaces for years, and if you have a contaminated jacket, you have contaminated work clothes and leave it unwashed. A year later, when you go to them, there is still vegetable oil on the jacket and it causes allergies.


  • Be sure to use protective creams and oils. Dermal products are usually available without a prescription and can act as a shield between your skin and oily resins and prevent the toxic ivy ocular resin from sticking.


When should you see a doctor?

  • Be sure to see your doctor if you are a person who has inhaled the smoke from burning poison ivy and is now having trouble breathing.
  • If you have experienced severe and widespread reactions following contact with poison ivy
  • If your skin is very swollen
  • If after three weeks there are still skin symptoms
  • If the lesions cause your face, genitals, mouth and eyes to become inflamed and itchy
  • If you have a fever higher than 37.8 degrees Celsius
  • And as we said, if the skin rash does not go away in a few weeks, be sure to see a doctor.
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