Hello i have a little red spot and flat in my nose, i went to the dermatologist and he use an electric needle, after 2 weeks the red spot came back?

Red spot: Sometimes it takes several treatments before the vascular lesion is destroyed. If the doctor used a strong electric needle treatment it would give you a scar. So the doctor will want to use the gentlest treatment that will work. If the vessel comes back they will need to retreat it with a stronger dose. Go back to your dermatologist because they will have no way to know that the treatment was not.