what is the connection between smoking and psorias? The goals of any therapy are to contain and elevate the problem it is always capable of returning. This can be brought on by environmental triggers, stress, and smoking to name a few causes. If the patient has a family history of the illness there is more likelihood of them forming psoriasis and passing it on in their family. With modern treatments and a new understanding of this disease it is much more realistic to say that a significant improvement can be made to the infected area but in many cases complete clearance may not be possible.