Your dad has psoriatic arthritis and you have psoriasis what are the chances you'll develop psoriatic arthritis?

My husband's Mother has Lupus and he has psoriatic Arthritis. I believe that all autoimmune disorders have a tendency to be hereditary. My eldest son has psoriasis. My husband's Mother has Lupus and he has psoriatic arthritis. I believe that all autoimmune disorders have a tendency to be hereditary. My eldest son has psoriasis. My husband's Mother has Lupus and he has psoriatic arthritis. I believe that all autoimmune disorders have a tendency to be hereditary. My eldest son has psoriasis.