Weakness

Definition

Weakness is a condition characterized by reduced strength or muscle power. It can be caused by various factors, including nutritional deficiencies, neurological disorders, and hematologic conditions.

5 Must Know Facts For Your Next Test

1. Vitamin B12 deficiency can lead to neurological weakness due to its role in nerve function.
2. Iron deficiency anemia is a common cause of weakness due to the reduced oxygen-carrying capacity of the blood.
3. Electrolyte imbalances, particularly low potassium or sodium levels, can contribute to muscle weakness and neurological issues.
4. Protein-energy malnutrition can result in significant muscle wasting and overall body weakness.
5. Chronic diseases such as multiple sclerosis and Parkinson's disease often exhibit weakness as a primary symptom due to their impact on the nervous system.

Review Questions

• How does vitamin B12 deficiency contribute to neurological weakness?
• What role does iron play in preventing weakness related to hematologic health?
• Describe how electrolyte imbalances can lead to muscle weakness.

Related terms

Anemia:

A condition where there is a deficiency of red cells or hemoglobin in the blood, leading to fatigue and weakness.

Neuropathy: Damage or dysfunction of one or more nerves that typically results in numbness, tingling, muscle weakness, and pain in the affected area.

Malnutrition:

A state of poor nutrition caused by insufficient intake of nutrients or an inability for the body to absorb them properly.