This week on Show Me The Science, Professor Luke O'Neill takes a look at the skin condition psoriasis.

Psoriasis causes red patches of skin which are dry and flaky. It's prevalent on areas such as your scalp, elbows or knees. But you can get it anywhere on your body, and it's estimated that 5% of the population have some form of it.

Luke has worked on this topic, and also has psoriasis...