Poison oak/ivy
Poison oak and poison ivy are plants that can cause an allergic reaction in many people. They contain an oil called urushiol, which can cause a rash, blisters, and itching when it comes in contact with the skin.
Symptoms of poison oak or poison ivy rash usually appear within a few hours to a few days after exposure. They may include redness, swelling, and severe itching. The rash typically forms linearly, as the leaves often brush against the skin in a straight line.
To treat a poison oak or poison ivy rash, washing the affected area with soap and water is vital. Over-the-counter treatments, such as calamine lotion and hydrocortisone cream, can help relieve itching and inflammation. A doctor may prescribe oral steroids or other medications to treat the rash in severe cases.
Prevention is critical to avoiding a poison oak or poison ivy rash. If you will be in an area where these plants grow, wear protective clothing, such as long sleeves and pants, and avoid touching or brushing against the plants. If you come in contact with poison oak or ivy, immediately wash the affected area with soap and water.