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A migrainous infarction is a rare type of ischaemic stroke which occurs in correspondence with migraine aura symptoms. [1] Symptoms include headaches, visual disturbances, strange sensations and dysphasia, all of which gradually worsen causing neurological changes which ultimately increase the risk of an ischaemic stroke. [2]
These symptoms include headaches, nausea, vomiting, a depressed level of consciousness, stupor and death. [7] Continued elevation in the intracranial pressure and the accompanying mass effect may eventually cause brain herniation (when different parts of the brain are displaced or shifted to new areas in relation to the skull and surrounding ...
If an aneurysm ruptures, blood leaks into the space around the brain. This is called a subarachnoid hemorrhage. Onset is usually sudden without prodrome, classically presenting as a "thunderclap headache" worse than previous headaches. [11] [12] Symptoms of a subarachnoid hemorrhage differ depending on the site and size of the aneurysm. [12]
For the diagnosis, brain scans (such as MRI) should be done to rule out other potential causes. Specialty: Neurology: Symptoms: Headache, vision problems, ringing in the ears with the heartbeat [1] [2] Complications: Vision loss [2] Usual onset: 20–50 years old [2] Risk factors: Hypervitaminosis A, obesity, tetracyclines [1] [2] Diagnostic method
Encephalitis is inflammation of the brain. [5] The severity can be variable with symptoms including reduction or alteration in consciousness, aphasia, headache, fever, confusion, a stiff neck, and vomiting. [1] [6] Complications may include seizures, hallucinations, trouble speaking, memory problems, and problems with hearing. [1]
The first study of the human brain at 3.0 T was published in 1994, [13] and in 1998 at 8 T. [14] Studies of the human brain have been performed at 9.4 T (2006) [15] and up to 10.5 T (2019). [16] Paul Lauterbur and Sir Peter Mansfield were awarded the 2003 Nobel Prize in Physiology or Medicine for their discoveries concerning MRI.
The headache is classically a morning headache that may wake the person up. The brain is relatively poorly supplied by oxygen as a result of mild hypoventilation during the sleeping hours leading to hypercapnia and vasodilation. Cerebral edema may worsen during the night due to the lying position. The headache is worse on coughing, sneezing, or ...
Symptoms of a mild brain injury include headaches, confusions, tinnitus, fatigue, changes in sleep patterns, mood or behavior. Other symptoms include trouble with memory, concentration, attention or thinking. [3] Mental fatigue is a common debilitating experience and may not be linked by the patient to the original (minor) incident.