This award-wnning picture shows a 14-year-old girl with an unusual case of alopecia areata.
This picture was a bronze award winner in the 2009 Institute of Medical Illustrators awards and was taken by Melvin Bond at the Lister Hospital in Stevenage.
This is the sixth in our series of clinical pictures which will be published every week. Check back here to see future pictures.
Clinical picture of the week – copyright East and North Hertfordshire NHS Trust Clinical picture of the week – copyright East and North Hertfordshire NHS Trust