Skin rash from Accutane that is not subsiding with hydrocortisone cream or lotion. (Photo)

I'm currently on 30mg of accutane - 2 1/2 months into my treatment. I've had mild leg/arm rash for much of the treatment which I've been treating with cortisone cream, however the rash on my leg has worsened. The skin is lumpy, scaly and a strange brownish colour in places. This morning it was lightly oozing (probably where I had foolishly scratched.) It's very sore. Is this normal? I've tried taking a picture but the skin was less inflamed after my shower and it's hard to capture on camera.