Read More. A high PTH level along with a high calcium level can cause problems such as osteoporosis, kidney stones, hypertension, kidney failure, peptic ulcer disease, cognitive changes, and problems with the balance of water in the body.ead More. The Nephrologist ruled out kidney stones, narrowing of arteries in my kidneys, kidney infection, kidney failure, etc. i had xrays before and after I saw her and they never showed any stones or blockages.