Re: hot and red ear
When your ear gets red and hot, is your earlobe spared? The most common cause of a red hot ear is a disease known as relapsing polychondritis. This is an autoimmune disease which causes inflammation of cartilage. If it involves the ear, often the earlobe is spared because it is not made of cartilage. Infections like Lyme disease causing isolated chondritis have been described, but they are almost always involved in areas where there are joints such as synovial joints (knees, hips, elbows) or non-synovial joints like the sternoclavicular joint, symphysis pubic etc. Lyme is a rare disease to begin with, and for it to cause external otic chondritis is even more rare.
When your ear is hot/red, is it painful?