Intermittent shortness of breath causes
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Common Medical Causes of Intermittent Shortness of Breath
Intermittent shortness of breath, also known as intermittent dyspnea, can be caused by a wide range of medical conditions. These include both cardiac and pulmonary diseases, as well as other systemic or functional disorders. Cardiac causes may involve arrhythmias, myocardial infarction, valvular heart disease, or heart failure, while pulmonary causes include asthma, chronic obstructive pulmonary disease (COPD), pneumonia, pulmonary embolism, and lung malignancy. Other possible contributors are panic attacks, thyroid disease, anemia, and obesity. In many cases, the cause may be multifactorial, requiring a thorough clinical history and examination to identify the underlying issue .
Asthma and Dysfunctional Breathing Patterns
Asthma is a well-known cause of intermittent shortness of breath, often accompanied by wheezing, chest tightness, and coughing. Asthma symptoms can be triggered by various factors and may worsen at night or with activity. Proper management with inhaled medications can help control symptoms and prevent attacks . Dysfunctional breathing, such as thoracic pattern disordered breathing or paradoxical vocal fold motion disorder, can also cause intermittent or chronic breathlessness, especially during exercise or stress. These functional breathing disorders are often diagnosed through careful history, examination, and sometimes specialized testing, and may be managed with breathing retraining or vocal exercises rather than medication Depiazzi2016Fahy2021.
Cardiac Causes: Intermittent Ischemia and Heart Failure
Intermittent shortness of breath can also result from cardiac issues. For example, spontaneous coronary artery dissection (SCAD) can cause a flap that intermittently blocks blood flow, leading to episodes of severe myocardial ischemia and heart failure symptoms, including shortness of breath . Other cardiac conditions, such as arrhythmias or valvular disease, may also present with intermittent dyspnea, especially if blood flow to the lungs or body is temporarily compromised Blasi2012Fernandez2019.
Anxiety, Hyperventilation, and Functional Disorders
Psychological factors, such as anxiety and panic attacks, are common causes of intermittent shortness of breath. Hyperventilation episodes, often seen in anxiety states, can lead to symptoms like breathlessness, carpopedal spasm, and even loss of consciousness. These episodes may occur without any underlying physical disease and are often diagnosed after excluding other causes . Functional breathing disorders, as mentioned above, can overlap with anxiety-related symptoms Depiazzi2016Fahy2021.
Exercise-Induced and Physiological Causes
Some individuals experience intermittent shortness of breath during or after exercise. This can be due to exercise-induced bronchoconstriction (a form of asthma), reaching one's physiological limit (especially in deconditioned or unfit individuals), or dysfunctional breathing patterns. Accurate assessment is important to distinguish between these causes and to avoid unnecessary medication .
Rare and Unusual Causes
Less common causes of intermittent shortness of breath include upper airway obstruction from conditions like vocal cord dysfunction or even rare cases such as leech infestation in the oropharynx, which can cause intermittent airway blockage and associated symptoms Fahy2021Zengin2014. Orthostatic cerebral hypoperfusion syndrome (OCHOS), characterized by abnormal cerebral vasoconstriction, can also present with short episodes of confusion, dizziness, and shortness of breath due to intermittent declines in cerebral blood flow .
Conclusion
Intermittent shortness of breath is a symptom with a broad differential diagnosis, including asthma, dysfunctional breathing, cardiac disease, anxiety, and rare causes like airway obstruction or cerebral hypoperfusion. A careful clinical history, physical examination, and targeted investigations are essential to identify the underlying cause and guide appropriate management Blasi2012Depiazzi2016Al-Amodi2022+6 MORE.
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Dysfunctional breathing and reaching one’s physiological limit as causes of exercise-induced dyspnoea
Exercise-induced breathlessness in young athletes can be caused by nonasthmatic causes, such as reaching their physiological limit, and can be effectively managed through reassurance, advice, and simple interventions.
Coronary artery occlusion flap: An unusual case of spontaneous coronary artery dissection
This case highlights the importance of increased awareness of abnormal presentations of spontaneous coronary artery dissection to better identify and manage future cases.
A Rare Cause of Epistaxis due to Leech Infestation: A Case Report Epistaksisin Nadir Bir Sebebi Sülük Enfestasyonu: Olgu Sunumu
Oropharyngeal leeches can cause intermittent epistaxis, nasal congestion, sore throat, and shortness of breath in mentally retarded patients.
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