Neck cracks if I move head up down/side to side. Chin tingles. Pain under belly button but across entire lower body, shingles? 1.8 cm slip L5-S1 too.

Multiple. All those things are not likely related to a single cause. The neck cracking is likely Crepitance related to early arthritis in the facet joints, this is called cervical Spondylosis. It would not likely be related to the other issues you mentioned. You might consider a good medical checkup to discuss with your primary care doctor.

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Neck cracks if I move head up down or side to side. Chin tingles. L5-S1 slip of 1.8 CM. Pain under belly button but across entire body/abdomen.

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