Not to be confused with other types of electrography or with echocardiography. Electrocardiography (ECG or EKG) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on the skin.
Addiction is defined as a chronic, relapsing brain disease that is characterized by compulsive drug seeking and use, despite harmful consequences. It is considered a brain disease because drugs change the brain; they change its structure and how it works.
Some chronic headaches are due to overuse of medicine; avoid using migraine prescribed medicines more than twice per week. Using and tapering medicine for migraines should proceed under your doctor's supervision. Narcotics are used as a last resort for migraines because they can be addictive. Treatment: Preventive Medicines