What are common causes of lightheadedness and fatigue?

Lightheadedness and fatigue are two common symptoms that can have a variety of causes. The symptoms may appear alone or together, and may not be simultaneous, even if they are related to the same cause. The causes of lightheadedness and fatigue are often minor and the result of a temporary health problem. However, in some cases, lightheadedness and fatigue can become a chronic problem and may indicate a more serious underlying condition.

Dizziness can be described as similar to motion sickness. Some people feel weightless, cannot walk or think normally, or pass out. Fatigue is an extremely common symptom that makes a person feel tired, listless, or weak. Both lightheadedness and fatigue can be mild enough to shake you off in a few seconds or severe enough to make you want to stay in bed all day.

Lightheadedness and fatigue are often caused by a disruption of the body's system functions due to improper nutrition or other problems. Hypoglycemia, also known as low blood sugar, occurs when the body is low on glucose that provides energy and can cause dizziness and fatigue. Dehydration or not getting enough sleep can also cause these symptoms to appear. An episode of fatigue and light-headedness usually ends when the disruption of normal eating, water, or sleeping patterns is addressed.

Some medical conditions and medical treatments can cause these symptoms to appear. People with diabetes may be more likely to develop hypoglycemia as a result of an insulin imbalance that their bodies cannot correct without medication. Other conditions, such as thyroid imbalances, can also lead to fatigue and dizziness if not managed properly. Many prescription drugs list both fatigue and lightheadedness as possible drug side effects.

If a person has sustained a head or neck injury, fatigue and lightheadedness can be signs of a serious problem. Head injuries can cause concussions, loss of consciousness, swelling in the brain, or other potentially serious conditions. Anyone who has difficulty staying awake or experiences extreme dizziness or lightheadedness after an injury may need immediate medical attention.

More serious causes of fatigue and lightheadedness are rare, but doctors may investigate them if symptoms become chronic. Heart problems that prevent the proper circulation of blood and oxygen can cause exhaustion and dizziness; Likewise, low blood oxygen levels can have the same effect. Inner ear problems and cancerous or noncancerous tumors in the brain can also cause both symptoms to become chronic. In general, if symptoms persist for more than two weeks, medical consultation is often recommended.

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