I developed an itchy, what I thought to be an allergic reaction, with tiny bumps suddenly at 7pm on 7/10/16. I took bendryl then. More throughout the nite , but isn t doing much good. I was scratched and bitten by a cat days ago. Could that cause a rash with bumps to come on suddenly all over my body? Head, neck,arms , legs, ears, face? I m a 51yr old female. Thank you.