There are 2 basic stages of opiate withdrawal
The Short-lived, Acute, intense, immediate withdrawal
which occurs directly after stopping all opiates. "clucking", shakes, profuse sweating, chills, gooseflesh, body temperature instability, autonomic instability, "revved-up," diarrhea, cramping, bone pain, mental anguish, etc. (takes ~3 to 10 days depending on the half-life of the drug)
PAWS or "Post Acute Withdrawal Syndrome.