An oily substance in plants called urushiol causes the allergic reaction. The allergic reaction causes a rash followed by itchy bumps and blisters. Eventually, the blisters rupture, exude, and then crusts form. The best treatment is to avoid contact with poison ivy, poison oak, or poison sumac.
The pus that comes out of the blisters does not contain urushiol and does not spread the rash. However, poison ivy rash is possible if you touch plant resin that is still on the person or contaminated clothing. Over-the-counter options can help treat poison oak, ivy, or sumac rashes if you know what to buy. If your rash is festering, you should apply aluminum acetate, aluminum sulfate, or calcium acetate.
The allergic reaction to poison ivy includes a blistering rash, itching, and sometimes swelling. The rash may look like straight lines if the plant rubs against the skin that way. It has a rash and itching. This is a delayed reaction to the oils of the poison ivy plant.
It's likely that you've been in contact with her for the 3 days prior to the onset of symptoms. Your skin will turn red and itch. These can rupture and allow a clear yellow liquid to escape. The reaction usually starts to go away after 1 to 2 weeks.
However, it may take 4 to 6 weeks for it to completely disappear. The main symptom of poison ivy is a rash. This is also known as contact dermatitis. The rash may be mild or severe.
It may appear immediately or 1 to 2 days after contact. It is characterized by redness and swelling. Small blisters may form and may cause itching or pain. Try not to scratch the blisters.
Bacteria under your nails can get into blisters and cause an infection. Poison ivy rash often appears in a straight line because of the way the plant rubs against the skin. A rash occurs only where vegetable oil has been in contact with the skin, so a person with poison ivy cannot spread it through the body by scratching. You scratch your elbow, wipe the sweat off your face, roll up your sleeves and, each time, you move a little poison ivy oil around your body.
If you scratch a poison ivy rash, bacteria under your nails can cause the skin to become infected. If poison ivy is widespread or affects the skin around the eyes, be sure to consult your doctor.