They can appear, some people say, in a few minutes. They can feel them pop and watch them appear. I have never seen this happen and it usually is a gradual process over months and years. If you become pregnant, this can happen much more quickly. The legs will throb and ache and feel heavy with the veins.
Varicose veins usually appear gradually over time, but can appear suddenly after physical traumas, surgery or child birth. With the sudden appearance of varicose veins and symptoms of throbbing pain that is new and without a clear cause, I would recommend evaluation for possible restriction of the venous blood flow for possible blood clots (phlebitis or DVT) or other mechanical blockage.
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