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The reason why dehydration can cause lightheadedness is because ... Feeling lightheaded can also be a sign of low blood sugar, Dr. Shaikh says. ... “Take any new onset of symptoms of dizziness ...
[20] [21] Neuroglycopenic symptoms are caused by low glucose in the brain, and can result in tiredness, confusion, difficulty with speech, seizures, and loss of consciousness. [3] Adrenergic symptoms are caused by the body's reaction to low glucose in the brain, and can result in fast heart rate, sweating, nervousness, and hunger. [3]
Lightheadedness often accompanies the flu, hypoglycaemia, common cold, or allergies. Dizziness could be provoked by the use of antihistamine drugs, like levocetirizine, or by some antibiotics or SSRIs. Nicotine or tobacco products can cause lightheadedness for inexperienced users. Narcotic drugs, such as codeine, can also cause lightheadedness.
Thus dizziness can be caused by a variety of problems and may reflect a focal process (such as one affecting balance or coordination) or a diffuse one (such as a toxic exposure or low perfusion state). [8] Common causes of dizziness include: Inadequate blood supply to the brain due to: A sudden fall in blood pressure [7]
What causes vertigo and dizziness? “Dizziness is generally a more neurological cause or a potential cardiac cause. For example, it could be a blood flow issue or stenosis of a carotid artery ...
“Common symptoms include fatigue, weakness, shortness of breath, chest pain, headaches, palpitations, pale skin, dizziness, cold hands and feet.” When decreased oxygen is being delivered to ...
[16] [17] Any cause of inflammation such as common cold, influenza, and bacterial infections may cause transient vertigo if it involves the inner ear, as may chemical insults (e.g., aminoglycosides) [18] or physical trauma (e.g., skull fractures). Motion sickness is sometimes classified as a cause of peripheral vertigo. [citation needed]
Severe hypovolemic shock can result in mesenteric and coronary ischemia that can cause abdominal or chest pain. Agitation, lethargy, or confusion may characterize brain mal-perfusion. [4] Dry mucous membranes, decreased skin turgor, low jugular venous distention, tachycardia, and hypotension can be seen along with decreased urinary output. [4]