Can people have an acute attack of psoriasis? I've been struggling with hormonal imbalance, thryoid problems, have no genetic markers for psoriasis, and my legs are covered in spots. My skin biopsy indicated psoriasis. I guess my question is: for skin biopsies, is the diagnosis given based on the rate of skin growth? Or are all cases of excessive skin growth termed "psoriasis"? Could this just be a hormonal problem?