Thank you for your query.
If they are freckle
like lesions then they must be congenital and there is no reason to worry.
If they are changing colour or increasing in size then consult a dermatologist
is usually reduced with increased intake of fluids,fruits and fibre.
If you have any further queries you are free to consult me.
Hope this answers your query.
Wishing a speedy recovery.
Have a nice day.