Sirenita48,

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Concussions often include a neck injury. Icing your neck can be helpful.

You can make your own crush-able icebags. Mix 1 cup of rubbing/isopropyl alcohol with 2 cups water. Put it in a freezer zip lock bag and squeeze most of the air out. Freeze it. When frozen, it will crush a mold to any shape.

How to Make Your Own Gel Ice Pack or Moist Heat Pack

Neck inflammation can contribute to dizziness.