May refer to:

Grass Tetany


  • Tetany is variable intermittent muscle contraction.

Causes

  • Stricnine poisoning.
  • Hypocalcemia
    • For example, due to:
      • Parturition
      • Hypothyroidism
  • Glycine disorders, in:
    • Humans
      • Knowns as startle disease or hyperexplexia.
      • Causes sudden contraction of primarily antigravity muscles
    • Arabian horses