Does varicose veins cause pain?

I am curious about what symptoms are associated with varicose veins.

Are you experiencing pain or severe discomfort?

I'm worried because it's a job where I sit all day long. I often get cramps and numbness while sleeping, so I'm concerned I might develop it too. For those who have experienced it, how was it?

Are you feeling very sick and exhausted? Is it a disease that easily causes varicose veins?

I really don't want to get any kind of illness.

After back surgery due to an occupational disease, I hate everything about hospitals and all that comes with being hospitalized.ㅜㅜ