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Scintillating scotoma is a common visual aura that was first described by 19th-century physician Hubert Airy (1838–1903). Originating from the brain, it may precede a migraine headache, but can also occur acephalgically (without headache), also known as visual migraine or migraine aura. [ 4]
Vitamin A has many functions in the body, including supporting immunity. As a provitamin A carotenoid, beta-carotene helps protect and strengthen the functions of the immune system. It helps the ...
Balance disorder. A balance disorder is a disturbance that causes an individual to feel unsteady, for example when standing or walking. It may be accompanied by feelings of giddiness, or wooziness, or having a sensation of movement, spinning, or floating. Balance is the result of several body systems working together: the visual system (eyes ...
Vertigo. Vertigo is a condition in which a person has the sensation that they are moving, or that objects around them are moving, when they are not. [ 1] Often it feels like a spinning or swaying movement. [ 1][ 2] It may be associated with nausea, vomiting, perspiration, or difficulties walking. [ 2] It is typically worse when the head is ...
Syncope (medicine) Syncope, commonly known as fainting or passing out, is a loss of consciousness and muscle strength characterized by a fast onset, short duration, and spontaneous recovery. [ 1] It is caused by a decrease in blood flow to the brain, typically from low blood pressure. [ 1] There are sometimes symptoms before the loss of ...
Fatigue, dizziness and feeling lightheaded are all symptoms of dehydration. Especially in the winter, it can be easy not to drink enough water. It's recommended to drink between nine and 13 cups ...
Although fever is a common symptom of Covid-19, some people infected with the virus report chills without a fever. So, if you have chills along with other common Covid symptoms, such as a sore ...
Phantosmia (phantom smell), also called an olfactory hallucination or a phantom odor, [ 1] is smelling an odor that is not actually there. This is intrinsically suspicious as the formal evaluation and detection of relatively low levels of odour particles is itself a very tricky task in air epistemology. It can occur in one nostril or both. [ 2]