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Some spacesuits contain a device called the Valsalva device to enable the wearer to block their nose to perform the Valsalva maneuver when wearing the suit. Astronaut Drew Feustel describes it as "a spongy device called a Valsalva that is typically used to block the nose in case a pressure readjustment is needed". [ 29 ]
According to Dr. Farhat Shaikh, MD, a family medicine physician at Bliss Direct Primary Care in Frisco, Texas, there are many different reasons why someone could get lightheaded every day. One ...
Lightheadedness is a common and typically unpleasant sensation of dizziness [1] or a feeling that one may faint.The sensation of lightheadedness can be short-lived, prolonged, or, rarely, recurring.
It is most frequently caused by impact trauma, such as by a blow to the face. [3] It can also be a congenital disorder, caused by compression of the nose during childbirth. [3] Deviated septum is associated with genetic connective tissue disorders such as Marfan syndrome, homocystinuria and Ehlers–Danlos syndrome. [6]
The closed rhinoplasty is when all the incisions are made inside the nose. The nasal tip position can be raised but the change is not so obvious as in the open rhinoplasty operation.
Empty nose syndrome (ENS) is a clinical syndrome, the hallmark symptom of which is a sensation of suffocation despite a clear airway. This syndrome is often referred to as a form of secondary atrophic rhinitis .
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A phosphene is the phenomenon of seeing light without light entering the eye. The word phosphene comes from the Greek words phos (light) and phainein (to show). Phosphenes that are induced by movement or sound may be associated with optic neuritis. [1] [2]