Short answer: Have a diagnosed cervical spine condition — check with a doctor or physical therapist before switching pillows, a direct, specific caution worth taking seriously.
Why this caution is grouped with three other specific "think twice" categories
Stomach sleepers, petite/short-necked frames, and frequent tossers and turners are the other three named categories sharing this same "think twice before ordering" framing.
Why a specific medical professional is named, not just "a doctor"
A doctor or physical therapist is named specifically — this dual recommendation reflects the genuinely relevant expertise for a cervical spine and pillow-fit question.
💊 Worth knowing: this is a comfort and posture product, not a treatment for sleep apnea or any diagnosed medical condition — worth remembering this boundary if you have an existing spine condition.
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