by Marjorie Montanez-Wiscovich and Arthur Mark Samia, The Conversation Cellulitis of left leg, demarcated, about 24 hours after onset of symptoms. Bacteria likely entered via a small psoriasis fissure. Credit: Stephen Ewen/Wikimedia Commons, CC BY-SA 4.0 Your skin usually deflects any bacteria it encounters, protecting you from all sorts of infections. However, when you get a bug...
