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More serious causes of secondary headaches include the following: [11] meningitis: inflammation of the meninges which presents with fever and meningismus, or stiff neck; ischemic stroke or a previous stage of the same; hemorragic stroke or a previous stage of the same; intracranial hemorrhage (bleeding inside the brain) because of any origin
A thunderclap headache is a headache that is severe and has a sudden onset. It is defined as a severe headache that takes seconds to minutes to reach maximum intensity. [1] [2] Although approximately 75% are attributed to "primary" headaches—headache disorder, non-specific headache, idiopathic thunderclap headache, or uncertain headache disorder—the remainder are secondary to other causes ...
When your blood pressure gets too low, your organs aren’t getting enough oxygen and nutrients, which can lead to shock, according to the National Heart, Lung, and Blood Institute. Signs of shock ...
Cytokines and increased intracranial pressure stimulate nociceptors in the brain that lead to headaches. Neck stiffness is the result of inflamed meninges stretching due to flexion of the spine. [10] The various layers of meninges act form a separation between the brain and the skull. [11]
A headache happens when blood vessels, nerves, or muscles in your head or neck get irritated. For most people, common triggers like stress, dehydration, or even skipping a meal can bring one on.
Carotid sinus syncope is due to pressure on the carotid sinus in the neck. [2] The underlying mechanism involves the nervous system slowing the heart rate and dilating blood vessels, resulting in low blood pressure and thus not enough blood flow to the brain. [2] Diagnosis is based on the symptoms after ruling out other possible causes. [3]
A migraine headache can throw your whole day off track. But if you can learn to pick up on your subtle migraine warning signs, you might able to avoid the pain entirely, experts say. "This is a ...
Meningism is a set of symptoms similar to those of meningitis but not caused by meningitis. [1] [3] [4] Whereas meningitis is inflammation of the meninges (membranes that cover the central nervous system), meningism is caused by nonmeningitic irritation of the meninges, usually associated with acute febrile illness, [1] [2] especially in children and adolescents. [2]