OK, thank you for that. Knowing that will stop me going off in the wrong direction in trying to help you.
Blood spots under the skin may be either purpura or petechiae. Purpura might look like bruises, but they are not caused by an injury as most regular bruises are. Petechiae don't look like bruises. They are tiny, flat, red or purple spots in the skin, but they are different than the tiny, flat, red spots or birthmarks that are present all the time.
Sudden unexplained bruising or blood spots under the skin or a sudden increase in the frequency of bruising may be caused by:
A medicine, such as aspirin or blood thinners which is obviously not the cause in your case.
Infection that causes the buildup of toxin in the blood or tissues which is called sepsis (Not to be confused with septacaemia!!)
A bleeding or clotting disorder, such as hemophilia, von Willebrand's disease, thrombocytopenia, or another less common bleeding or clotting disorder.
Other diseases that affect clotting are chronic inflammatory diseases, such as lupus.
Liver disease, such as cirrhosis.
Some types of cancer, such as Hodgkin's disease, leukemia, or multiple myeloma but your doctor would have picked up on that so don't worry about that one.
Inflammation of a blood vessel called vasculitis or malnutrition, such as deficiencies of vitamins B12, C, or K, or folic acid.
If you have not yet had one, I would advise you to request a blood test for full blood count including CRP which is something which will tell whether there is any inflammation in your body and rule out lupus. Also white cell count and red cell count.
Do not be fobbed off sweetheart by thinning skin. You are 67 not 97!!!
I hope this has helped you a little. I do hope you get it sorted out soon, if not ask to see a haematologist who will definitely investigate this for you.
With my very best wishes