I was diagnosed with cluster headache after getting new onset severe stabbing pains in my r temple.don't normally get headaches.was put on prednisone 40 mg x 5 days.will it likely come back? is this an inflammatory condition? i do have sle as well?

Cluster headache is not treated with steroid alone. I wonder if the treating doctor suspects vasculitis related headache such as temporal arteritis but 5 days of Prednisone is not the right treatment duration. Are you currently on any maintenance therapy for SLE?

Obtain neurologist and explore ways of preventative intervention. Can be chronic and best to stop prior to onset

I regard "Cluster Headache" as a symptom not so much as a diagnosis. The underlying problem could be as simple as temporal muscle tension or muscle spasm for a TMJ disorder which I have seen many times. An underlying cause or diagnosis is very much in order.