Photosensitivity or abnormal light sensitivity is very complex and is a major symptom of lupus. The American College of Rheumatology (ACR) loosely defines photosensitivity as "a skin rash as a result ...

UV reaction can take many forms ... Vitamin D doesn't have to come from the sun. For people with lupus, vitamin D is a real concern. “It’s high on everyone’s radar and with good reason,” Fiorentino ...