I have been told that I have Rosacea. What exactly is this skin disorder?

Rosacea is a common skin disorder characterized by intense redness of the face (sometimes referred to as flushing) around the nose and cheeks. It does look similar to acne but it is a different skin disorder. The skin in rosacea appears more red (inflamed) and there are many small red blisters or pus filled pimples. It is commonly mistaken for Acne. Rosacea is often called Acne Rosacea but the disorder is distinct from the common acne seen in younger people. Unlike acne, blackheads are never seen in Rosacea.  Sometimes rosacea is mistaken for dermatitis or an allergic reaction.