Many autoimmune diseases such as rheumatoid arthritis, Sjogren’s, and lupus have a female sex bias, meaning that they affect a disproportionate number of women compared to men. In contrast, whether or not there is a sex bias for psoriatic arthritis is less clear. Although some studies have reported that the incidence of psoriatic arthritis does not differ between males and females[1], this may depend on the population, as other studies have suggested that males may have increased incidence of the disease.[2]