Polymorphic light eruption

Polymorphous light eruption (PMLE or PLE) is an unusual reaction to sunlight, the cause of which is not understood. It is one of the most common sun-related skin problems and is more common in women and in people who are not regularly exposed to the sun. The eruption appears as multiple red bumps and irregular red patches appearing on sun-exposed skin. These patches, which are itchy, generally appear between 30 minutes and several hours after sun exposure; however, new patches may develop many hours or several days later. The bumps and patches usually go away within a week. Typically, people with this condition who continue to go out in the sun gradually become less sensitive to the effects of sunlight as the summer progresses.
http://www.merck.com/mmhe/sec18/ch214/ch214c.html   

A link with pictures/images for PMLE:
 http://dermis.multimedica.de/dermisroot/en/28869/diagnose.htm  

A web page  written for doctor  with different treatment recommendations for PMLE:
http://www.emedicine.com/DERM/topic342.htm

Conditions related to polymorphic light eruption

• Hereditary polymorphic light eruption
• Juvenile spring eruption, (PMLE related)
• Hydroa vacciniforme, (PMLE related)