Researchers and members of the medical profession have long observed that the holiday season is notorious for heart attacks, heart failures, and newly diagnosed arrhythmias. Don't second guess or hesitate to treat what might be symptoms of a heart attack during this time (or at any time) of year---phone 9-1-1. Many factors may play a role in cardiac events, but one little-publicized phenomenon is called "holiday heart syndrome". The term was coined to describe the sudden onset of cardiac reactions linked to heavy drinking. These may include a racing or pounding heart, possibly to the point of feeling dizzy or faint; chest pain; panic; arrhythmia; severe tachycardia; and shortness of breath. While socializing with alcohol, be aware that heavy drinking affects metabolism and is especially demanding on the heart. Casual drinkers, too, can be at risk for holiday heart syndrome as they try to keep pace with family and friends at all-day-drinking-get-togethers that may last into the evening. Holiday heart syndrome can be a serious condition for someone who already has heart disease, too. Avoid alcohol abuse and binge drinking.