It is a skin condition caused by a parasite called demodex. They are tiny which you cannot see. A patient with this condition may present with facial roughness, redness and sensitivity. It may also exacerbate other skin conditions such as rosacea. It can be treated with topical medication.

A short video by Skin Cancer College Australasia on how to check your skin for suspicious spots and lesions.

The left side of the 69-year-old's face, which was exposed to UV rays through his truck window, is visibly more damaged than the right...