“Psoriasis of the scalp occurs in 75% to 90% of people with psoriasis, generally in the area behind the ears,” says Dominic Burg, chief scientist, biologist, and trichologist for Évolis Professional in Dallas, TX. What’s happening is that as skin gets irritated excess cells build up at a faster rate than your body can shed them. At the same time, blood vessels in those areas become swollen. What you’ll see form on the surface as a result of these two actions are patches of psoriasis plaques. While it may be a significant lifestyle change to make, you may want to give contact lenses a try to limit the amount of irritation behind your ears.