Hi, Thanks for asking. Based on your query, my opinion is as follows. 1. Not related to vit D deficiency. 2. Vit D deficiency results in reduced calcium levels in serum and reduced mineral density in bones. Calcium and vit D supplements will be helpful in this correction. 3. Not sure, about your age. In elderly, skin is thin and blood vessels can get easily bruised resulting in subcutaneous bleeding. This bleeding results in hemosiderin deposition and recurrent bleeding will cause bruise. It will be present for long time. 4. Also take vit c and protein supplements along with adequate hydration. For skin, moisturizer to prevent dehydration could be helpful. Hope it helps. Any further queries, happy to help again.