Should I get checked for Addison s Disease? I have low blood pressure, anorgasmia, and salt cravings. I also have depression but was diagnosed with that a while ago. More recently, I noticed the backs of my knees getting darker - it looks like a horizontal line of a bruise on each knee, right where it creases. However, I only noticed this symptom after I looked up Addison s Disease, so maybe it is just my imagination running wild (since hyperpigmentation is a symptom of AI). I have been checked for a lot of things lately, since my low bp leads me to black out often, so I don t want to go to the doctor needlessly again.