What Is The Treatment For Psoriasis?

I AM WORKING IN DELHI, CENTRAL SECTT. IN MY OFFICE ONE PERSON IS SUFFERING FROM PSORIASIS FOR THE LAST 7 YEARS. HE WAS TAKING MEDICINE, BUT NOTHING HAS BEEN DONE. NOW HIS LEGS ARE SWELLING AND CAN'T WALK. WENEED YOUR HELP. WHEN CAN MEET YOU? HE IS HAVE TWO DAUGHTERS. PL. LET US KNOW.