Hi, Good evening. I have gone through the details you have provided. It would be great if further details are available. The varicosities might be due to prolonged sitting/standing, or could be due to increased body weight or due to lack of adequate exercise. It can also be seen if there is a genetic history. Small incompetence in superficial veins in the lower limbs can cause this.
Next Steps
Check if there is visible swelling, redness or pain around the area. If yes, you need to consult a Physician or Vascular Surgeon. They might advise a doppler ultrasound. If it is just visible recently with no other symptoms, you could try bringing a few life style changes for weight reduction (if overweight/obese), regular walking (at least 30-40minutes daily).
Health Tips
Avoid prolonged standing or sitting. Avoid tight clothing around your thighs.