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Recently a patient came to us Dermatology clinic With a rash and a story similar to many others. He went camping with his friends a few days ago and helped carry logs to light the fire. He knew little that he was going to pay to help. A few days later, red spots appeared on his forearms and chest, which soon caused disastrous itching and began to form blisters.
If you’ve spent the woods, in the garden, or even on the edge of the playground outdoors, you may have experienced something similar after encountering poisonous ivy. It’s not easy to forget.
Encounter with botanical stimulants
I found poison ivy Everywhere in the Americas, Mainly in the eastern and midwestern states. Unfortunately for us humans, it is a tough plant that can grow under many different conditions. Its favorite place Located in wooded areas, gardens and roadsides with partial shade or full sunlight.
And despite bothering people Poison ivy is an important member of the ecosystem.. Its leaves, stems and fruits are food for animals, and vines serve as shelters for small animals such as toads and rats, and are also useful for climbing trees. Climate change has been found to benefit poisonous ivy, Enables larger and more irritating plants..
You can usually find poison ivy by that Three infamous dull or shiny green leaves It comes off the red stem. Sometimes flowers and fruits come out from the ends of the branches.
Despite its name, poison ivy is not toxic. There is an oily sap called urushiol on the leaves and stems that stimulates most people. skin.. actually, 85% to 90% of people are allergic It poisons ivy urushiol to some extent, but the rest are less sensitive to this oil.You can sometimes See Urushiol oil as black spots on poison ivy leaves.. Urushiol is also an evil force for poison oak and poison mac.
Direct contact with poison ivy is clearly a bad idea. Problems can also occur if you hit a plant and touch something that picks up urushiol, such as clothing or pets. If the contaminated object is not cleaned, Urushiol will remain in a standby state. Still, it can cause a rash hours, days, or even days later. For years..Another danger is Smoke from poison ivy burningBreathing can affect not only the skin, but also the nose, mouth, trachea, and lungs.
From oil to rash
The poison ivy rash can occur in a variety of forms, from small red ridges to blisters and red spots. Whichever way you look at it, it’s almost always a daunting itch.
When you become “addicted”, you don’t know right away. Depending on the amount, sensitivity and frequency of urushiol on the skin, it can take 4 hours to 10 days for the rash to appear. Previously exposed to poison ivy..
Between exposure and itchy pain, your body goes through a complex process of identification and reaction.When the oil enters the skin, the sensor cells of the immune system recognize urushiol as follows: Heterogeneous to your body.. These sensor cells then call the protected cell into that area to warn of intrusion. The protector cells protect your body from invaders by attacking urushiol on the skin.Unfortunately, some of your bodies are normal Skin cells are the victims of this war, It leads to itching and swelling of the poisonous ivy rash.
Your protector cells then sit close to the skin for years and Urushiol stand guard If it reappears.If so, they remember encountering this bad guy before, and their reaction is often Faster and more powerful From the first time.
This rash is a kind of rash Allergic contact dermatitis— Some people in the same family as the rash can get it by wearing jewelry or metal belt buckles, or by using certain scents or cosmetics.
What to do if damage occurs
The saying “three leaves; leave it alone” emphasizes avoidance, which is the best strategy to prevent poison ivy.However When in contact with poison ivyThe first step is always to remove and wash all clothes that come in contact with the plant. Immediately, gently but thoroughly wash your skin with soap and water. It also helps clean under the fingernails and cut short nails to prevent urushiol from spreading if the skin is injured.
Allergic contact dermatitis due to poisonous vines most often causes a rash. Usually lasts 2-3 weeks Before it’s completely gone.
Eventually it will heal spontaneously, but over-the-counter and home remedies can be tried to control the spread of itching and rashes. The blisters that form are uninfected and usually do not require antibiotics. However, if scratched, and if it is very difficult to resist, open skin can become infected.
Reduces itchingA cold, damp compress is just as useful as soaking in a cold bath with baking soda or oatmeal bath products. Calamine lotions and creams containing menthol can also cut itching a little. Over-the-counter cortisone creams or ointments can be used for the first few days after contact with poisonous ivy to calm the body’s reaction and prevent the rash from getting worse. Taking antihistamines Like diphenhydramine at night, it can reduce itching slightly, which has the advantage of helping you sleep better.
Usually does not require a doctor’s consultation for Poison ivy The rash is a rash unless it is widespread, infected, lasts for more than 3 weeks, or is a rare extreme case that affects breathing.
The best attack is good defense. Be careful of what you touch when you are in the great outdoors. If in doubt, leave the three leaves, if any.
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