causing or capable of causing death; mortal; deadly: a fatal accident; a fatal dose of poison. causing destruction, misfortune, ruin, or failure: The withdrawal of funds was fatal to the project. decisively important; fateful: The fatal day finally arrived.
Extreme cold spells may come. Submitted by Erika (not verified) on Mon, 2009-09-28 13:40. Extreme cold spells may come from bad circulation (the blood not flowing properly) or from the thyroid (low thyroid function leads to a lower body temperature).
1 Common causes of fainting include heat, pain, distress, the sight of blood, or anxiety and hyperventilating. 2  Lying the person down will often improve the personâs condition.  Frequent fainting spells need to be medically investigated to check for underlying causes.