Thanks for posting your query.
If it is not causing any discomfort you can ignore them.
It is of concern only if it is symptomatic or for cosmetic purposes.
It is also of concern if there is increase in size.
They could be due to fragile capillaries of blood vessels or some others.
I suggest you to consult a physician or a Dermatologist
for cosmetic reasons.
Tough you consulted a doctor previously, you can visit some other doctor now.
Hope I have answered your query.
Wishing you good health.