What is rosacea? Rosacea is a chronic, inflammatory skin condition resulting in reddening skin and a rash on the nose and cheeks. Blood vessels and pus-filled spots are common signs. The skin can also become dry, swollen, flaky, and may burn or itch. The condition is non-contagious and can vary in severity. Most people are familiar with rosacea of the skin, but they’re less familiar with ocular rosacea.