Beyoncé revealed the disease that has accompanied her since childhood. What exactly does she have? - Walla! health.

The 42-year-old singer is launching a line of hair care products called Cécred. The average age for the onset of psoriasis is 33 and in three quarters of the patients the disease broke out before the age of 46. Psoriasis can appear anywhere and not just on the elbows, and can have accompanying symptoms related to the inside of the body - and therefore medical advice is critical.