Verified treatment outcome for Migraine with Neck Stiffness at Mihlon Family Chiropractic Center in Bayville, NJ.Cervical ROM restored from restricted to full. Headache severity reduced from 8/10 to 1/10 — 96% improvement. achieved over Over course of care. Treatment: Migraine with concurrent neck stiffness. Full cervical range of motion restored and headache severity significantly reduced..