Will psoriasis spread? Of course it will. Psoriasis is a serious disease in dermatology, and if treatment is not appropriate or systematic, psoriasis will easily develop into large plaque type, which belongs to common psoriasis and will return to normal skin after systematic and effective treatment. However, if repeatedly delayed, it may become pustular psoriasis, erythrodermic psoriasis, or even arthritic psoriasis, which will affect the quality of life of patients and bring very serious impact on their physical and mental health. The actual fact is that you will be able to get a lot more than just a few of these. If you suffer from this disease, go to a regular hospital for treatment as soon as possible, do not use certain prescriptions, which will make the disease spread very quickly.