I have suffered intermittently for for a long time. It all started with a bout of tendonitis and developed into sciatica. I get acute attacks that I control with painkillers. I can feel an attack coming on and take painkillers immediately and it usually subsides within an hour or two. If I don't take the painkillers the attack will last for hours and I go into something similar to shock, feeling sick and hot and unable to walk due to numbness and pain.
I find stretching helps. The attacks have declined over the years and I haven't had one for ages (touch wood). I wouldn't trust a homeopathic remedy, if anyone suggested one to me at the height of an attack I would probably try and punch them.
I was assessed by the local hospital to confirm the diagnosis and the doctor told me I had probably damaged a disc in my spine and sometimes it will tear a little bit and fluid will leak onto the nerve and that's what causes the pain. There is no associated physical activity that causes the attacks. they just happen.
While discussing the pain the doctor held his hand up palm towards me and opened and closed his hand and fingers and I could see he understood the pain perfectly with that hand movement. It visually described the pain perfectly.
Sympathies to all fellow sufferers. Stretching and painkillers works for me.