I've Been Taking Vyvance 30mg For Six Weeks. I Start

I've been taking vyvance 30mg for six weeks. I start getting an itchy rash which I thought was different laundry detergent initially. But now I know it's not. I have extremely itchy clusters of pustules randomly on specific spots of upper abdomen, lower back, and thigh. My skin is bruised looking on my thigh where I scratch a lot. I have photos if you want to see it. Clusters of red itchy blister-like lesions. Thanks!