Hello and welcome to HCM.
Thank you for your query.
The individual who suffered a stroke and had a history of leg pain could have had a stroke for many different reasons. May be he/she had other risk factors to a stroke eg.
high cholesterol levels,
high blood pressure, etc. His leg pain could have just been coincidental. Also, there is a condition of the leg called
deep vein thrombosis which predisposes to many other more serious conditions like
pulmonary embolism, clot/emboli formation, etc. All these conditions can have more serious repercussions in an individual if not properly managed/cared for.
But, a sciatica has no such risk to other conditions. Do not worry. If at all you think this could still be a problem, you could request your doctor to conduct an
ultrasound of your leg. This will rule out/diagnose the condition.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications. I would gladly help you.
Best wishes.