I just noticed recently that I have large intentions forming all over my skull. WHAT CAUSES THIS? I am 74 yrs old. I have arthritis of the neck area with a bad "bird neck" and arthritis of the spine right below the waist. I had a heart attack at 56 and my right artery closed off but grew feeder veins so have not had a bypass except a fem-fem bypass because of blockage in the right leg (My right leg is currently 70 percent blocked below the bypass). I take 2 hydrocodone tablets a day for my leg and back pain. My heart is currently operating at 40 percent. I have a mild case of COPD. I have been smoke free for many years. I don't have headaches except a sinus headache once or twice a year. I am pretty active and actually feel pretty good and can walk a long distance and have been my husband's caregiver the past 3 yrs as he has cancer.