I have a pain in my hip that shoots pain down my leg. sometimes if i am sitting a go to stand up my hip gives way. pain walking and during sleep?

Sciatica: pain that radiated down tour leg could be sciatica arising from your low back. alarm sign include loss of badder or stool control, progression of symptoms, nocturnal pain, history of trauma or malignancy all these require immediate attention and MRI others respond to relative rest physical therapy, chiropractic manipulation steroid injection or tincture of time

See details: If the pain radiates down the back of the thigh it is sciatica. If it is down the front of the thigh it is more likely to be hip disease.