With regard to the annual TB screening we are required to get to practice nursing--every year my arm turns very, very red, like an apple, and stays that way for about 10 days. Does anyone have this type of reaction, which I am assuming is an allergy to the solution? I am required to get the two step part done this year. I've already had the first injection and it looks pretty bad, but no raised bump, so not positive for TB. I am wondering if the second injection could cause a serious allergice reaction (i.e. throat closing, main fear!)