Psoriasis is an autoimmune disease that causes cell turnover to occur far more rapidly Credit: GARO/Getty ‘Tis the season of dry, flaky skin and lacklustre complexions: thanks to the sudden temperature fluctuations as we move between heated houses and the icy outdoors, plus dehydration and lack of sunlight, winter skin complaints are common. For the approximately 1.1 million adults living with psoriasis in the UK, the situation is even worse. This may be the case this year more than ever. As well as colder weather, stress (something which many of us have suffered more than usual this year) is a well- known trigger for the condition. Serve up both at the same time and you can say hello to scaly skin.