While in the Soul Cairn I found one of the big crystals and it started draining my health. I ate a soul husk and the effect disappeared but after i went away from the crystal the effect remained. I wasn't losing health but I had a spire of energy around me and I still have it. I will post pics soon.

Like when you shout Kyne's Peace near your horse, mount it, and have a fair enough Arvak.