Your veterinarian must remove the lump, have it tested and then get back to you with the test results. Just removing the lump requires anesthesia and time handling the surgery. The time it takes depends on the location and size of the lump. This can cost upwards of $300 to $400 in cats and $400 to $500 in dogs.
Many cases of poison oak rashes lasted for 2 to 3 weeks depending on the gravity of the situation. The time it takes for the rashes to heal varies on the exposure of skin to the oil and any possible complications. If the rashes are more severe, then its healing period is expected to take longer. Such cases may last longer than 3 weeks. However, this healing period does not mean 2 or 3 weeks of insane itching.
Poison ivy, oak, and sumac facts. 1  Poison ivy, poison oak, and poison sumac are plants than can cause an itchy rash upon contact. 2  A substance called urushiol, found in these plants, causes the rash. 3  The rash is not contagious.4  The rash usually disappears in one to three weeks.icture of poison ivy. Poison oak (Toxicodendron diversilobum) grows as a vine or shrub, and it is found in the western United States and British Columbia. It also has a leaf arrangement similar to poison ivy, with clusters of three leaflets. The leaves may sometimes resemble true oak leaves.