Not all headaches represent migraines, and migraine is not the only condition that can cause severe and debilitating headaches. For example, cluster headaches are very severe headaches that affect one side of the head in a recurrent manner (occurring in a cluster over time).The pain is sometimes described as drilling, and can be worse than migraine pain in some cases. Cluster headaches are less common than migraine.Tension headaches are a more common cause of headache. Thee occur due to contraction of the muscles of the scalp, face, and neck.n addition, many patients experience nausea or vomiting. The headache of a migraine often involves only one side of the head but in some cases, patients may experience pain bilaterally or on both sides. The pain of a migraine is often described as throbbing or pounding and it may be made worse with physical exertion.
The international normalized ratio (INR) is a calculation based on results of a PT and is used to monitor individuals who are being treated with the blood-thinning medication (anticoagulant) warfarin (CoumadinÂ®).he INR can be used to adjust a person's drug dosage to get the PT into the desired range that is right for the person and his or her condition. Warfarin may be prescribed for conditions such as: 1  Irregular heartbeat (atrial fibrillation). 2  The presence of artificial heart valves.
A: INR, or international normalized ratio, is a blood test done to check how thick or thin the blood is. INR is used to monitor Coumadin (warfarin) therapy. Coumadin is a blood thinner used to prevent blood clots in patients with a history of clots or certain heart conditions.oumadin (warfarin) is a blood thinner used to prevent the formation of blood clots, to prevent heart attacks and strokes. When you're on warfarin, your doctor must monitor your INR levels to ensure that your blood is not too thin, which can lead to an increased risk of internal bleeding.