Cryotherapy is most common, and uses liquid nitrogen to essentially freeze off Campbell de Morgan Spots. Laser removal
is now possible with many Campbell de Morgan Spots. These procedures tend to leave very little scarring, if any.
It would be advisable to consult a skin specialist for your symptoms and a proper clinical examination if the symptoms persist.
Let us know about how you are doing and if you need any other information.
Post us about what your doctor advises.