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The feeling can also be a transient side effect of adenosine administration, likely due to its activation of adenosine receptors. Due to adenosine's extremely short half-life, this effect is typically short-lived. [3] [4] A sense of impending doom can also present itself as a postoperative complication encountered after surgery. [5]
Anxiety is a feeling of uneasiness and worry, usually generalized and unfocused as an overreaction to a situation that is only subjectively seen as menacing. [6] It is often accompanied by muscular tension, [ 7 ] restlessness, fatigue , inability to catch one's breath, tightness in the abdominal region, nausea, and problems in concentration.
In medicine, malaise is a feeling of general discomfort, uneasiness or lack of wellbeing and often the first sign of an infection or other disease. [1] It is considered a vague term – describing the state of simply not feeling well. The word has existed in French since at least the 12th century.
Separation anxiety disorder (SepAD) is the feeling of excessive and inappropriate levels of anxiety over being separated from a person or place. Separation anxiety is a normal part of development in babies or children, and it is only when this feeling is excessive or inappropriate that it can be considered a disorder. [ 37 ]
View of a performance on stage from the wings. Stage fright or performance anxiety is the anxiety, fear, or persistent phobia that may be aroused in an individual by the requirement to perform in front of an audience, real or imagined, whether actually or potentially (for example, when performing before a camera).
A young girl looking worried. Worry is a category of perseverative cognition, i.e. a continuous thinking about negative events in the past or in the future. [3] As an emotion "worry" is experienced from anxiety or concern about a real or imagined issue, often personal issues such as health or finances, or external broader issues such as environmental pollution, social structure or ...
Convincing others of being badly in need of relief, assistance, and care heightened the chance of survival of the sick individual. High direct costs, such as energy spent on fever and potential harm caused by high body temperatures, and high opportunity costs, as caused by inactivity, social disinterest, and lack of appetite, make sickness ...
The DSM-IV changed the definition of excessive worry and the number of associated psychophysiological symptoms required for a diagnosis. [30] Another aspect of the diagnosis the DSM-IV clarified was what constitutes a symptom as occurring "often". [33] The DSM-IV also required difficulty controlling the worry to be diagnosed with GAD.