A nurse is preparing to administer the measles, mumps, and rubella (MMR) vaccine to an adolescent. Which of the following should the nurse identify as a contraindication to administering this vaccine?

Choice A rationale:
Lethargy, or extreme fatigue and sluggishness, is a characteristic symptom of hypothyroidism. Hypothyroidism occurs due to an underactive thyroid gland, which leads to a decrease in metabolic activity and energy levels. Children with hypothyroidism often exhibit lethargy, weakness, and a lack of interest in activities. This is due to the reduced metabolic rate and overall slowing down of bodily functions.
Choice B rationale:
Diarrhea is not a common finding associated with hypothyroidism. In fact, hypothyroidism tends to slow down gastrointestinal motility, leading to constipation rather than diarrhea. Therefore, diarrhea is not expected as a symptom in a child with hypothyroidism.
Choice C rationale:
Tachycardia, an elevated heart rate, is not typically associated with hypothyroidism. Instead, hypothyroidism often leads to bradycardia (a slower-than-normal heart rate) due to the overall slowing of the body's metabolic processes.
Choice D rationale:
Hirsutism, which refers to excessive hair growth in areas where hair growth is typically seen in males, is not a common finding in hypothyroidism. Hirsutism is more commonly associated with hormonal imbalances such as polycystic ovary syndrome (PCOS) rather than hypothyroidism.

Choice A rationale:
Washing the child's pillow in cold water twice monthly is not a relevant instruction for controlling allergens in asthma management. Asthma triggers are often related to airborne allergens such as dust mites, pollen, and pet dander, and focusing on pillow washing alone does not address the broader issue of allergen exposure.
Choice B rationale:
Using a humidifier in the child's bedroom can actually worsen asthma symptoms. Humidifiers can increase the humidity in the air, promoting the growth of mold and dust mites, which are common allergens that can trigger asthma symptoms. Therefore, this instruction is not appropriate for asthma management.
Choice C rationale:
This is the correct answer. Using a damp cloth to dust the child's furniture weekly is a relevant instruction for controlling allergens. Dusting with a damp cloth helps to capture and remove allergens such as dust mites, pollen, and pet dander from surfaces, reducing the child's exposure to these triggers and potentially minimizing asthma symptoms.
Choice D rationale:
Installing carpet in the child's bedroom is not recommended for asthma management. Carpets can harbor dust mites, mold, and other allergens that can exacerbate asthma symptoms. Hard flooring surfaces that can be easily cleaned and do not trap allergens are a better choice for individuals with asthma.