Headaches can be debilitating and interfere with the ability to work and perform daily activities. For some, the headaches are chronic while others are intermittent them. They can occur only on the left or on the entire head and face side. There are many causes and situations that cause headaches on the left side. The first step is to have the cause of any pain properly diagnosed head. Part of that process is to be aware of the history of symptoms, and inform a doctor who only occur on one side. This will help reduce the cause of a headache on the left side, which will help the development of effective treatment approach.
abnormal blood flow
Migraines can start and remain localized on one side of the head, says the University of Maryland Medical Center. Although the exact cause of migraine is not yet well understood, it is believed that the blood vessels constrict first and then expand, allowing increased blood to a specific area of the brain, which creates pressure and pain. This can occur in any area of the head or just on the left side. Alcohol, diet, stress, loud noises, smells and many other triggers can cause a migraine occurs.
Climate changes, smoking and hereditySave Vision./Photodisc/Getty Digital Images
Cluster headaches tend to occur on one side of the head, and often two, three or more times in a row for days. The National Institute of Neurological Disorders and Stroke states that these types of headaches are more common in smokers, and can also be caused by changes in climate. Cluster headaches can be mistaken for allergies. The tendency to cluster headaches may also be hereditary, or as a result of head injury.
Sinusitis is a condition in which the lining of the cavities sinus is irritated or inflamed. Exposure to cigarette smoke, seasonal allergies and respiratory conditions can contribute to this condition. It can occur in several breast or may be isolated to a sinus cavity on the left side of the head or face. The sinus headaches can often be misdiagnosed as migraine headaches. The difference is that the headaches of migraine usually occur along with many other symptoms.
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If there is an aneurysm in the left brain, it can cause a cluster headache or migraine type on the left side. The National Headache Foundation states that aneurysms can be congenital, or occur as a result of high blood pressure. In some cases, aneurysms do not produce symptoms until they are very large and are ready to burst, at which time the headache will be severe. Headaches because aneurysms can also cause symptoms during periods of physical exertion.