A patient with an autoimmune disorder asks the nurse for the cause of the problem. Which of the following should the nurse respond with to this patient?
1. It happens when you have a chronic illness.
2. It's because you were exposed to something repeatedly and then the body decided it needed to destroy it.
3. Your body misinterprets normal cells as being foreign and attempts to destroy them.
4. It happens when there is a vitamin deficiency.
3
Rationale: One theory about autoimmunity is that of molecular mimicry. This is when the body will react appropriately to an allergen but then incorrectly identifies normal body tissue as being the same allergen and begins to destroy normal tissue. This is what the nurse should respond with to the patient. Autoimmune disorders are not linked specifically to chronic illnesses. Autoimmune disorders do not occur in response to repeated exposure to an allergen. Autoimmune disorders are not specifically linked to vitamin deficiencies.
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