Are flat warts on feet dangerous? will freckles turn to warts?

Not dangerous: Flat warts usually remain painless and cause no important health problems, but sometimes those on the sole of the feet can become larger "plantar warts", which can be painful and more difficult to threat. If in doubt, see a doctor, preferably a dermatologist. Freckles do not become warts or vice versa; they are entirely different from one another.