Hypothyroidism Quiz
Questions: 16 · 10 minutes
1. Why can symptoms alone neither confirm nor rule out hypothyroidism?
Hypothyroidism never produces noticeable symptoms.
Symptoms are more accurate than thyroid blood tests in every situation.
Only neck swelling is relevant to thyroid function.
Many symptoms overlap with other conditions, and some affected people have subtle symptoms.
2. Someone reports persistent fatigue, feeling unusually cold, constipation, and dry skin. Which response is most accurate?
These can occur with hypothyroidism, but symptoms and blood tests require professional assessment.
This combination confirms hypothyroidism without any testing.
These symptoms occur only when thyroid hormone levels are high.
A normal body temperature would completely exclude hypothyroidism.
3. Which hormone from the pituitary gland usually rises when primary hypothyroidism reduces thyroid hormone production?
Thyroid-stimulating hormone (TSH)
Cortisol
Insulin
Parathyroid hormone (PTH)
4. A person has had their entire thyroid gland surgically removed. Why might long-term thyroid hormone replacement be needed?
Surgery causes the pituitary to produce too much free T4.
The removed gland can no longer produce the thyroid hormone the body needs.
Replacement is used only to treat surgical pain.
Thyroid hormone is required only until the incision heals.
5. Which blood-test pattern defines subclinical primary hypothyroidism in the usual biochemical sense?
Low TSH with low free T4
Low TSH with high free T4
Normal TSH with low free T4
Elevated TSH with free T4 still within the reference range
6. Which laboratory pattern can raise concern for central hypothyroidism involving the pituitary or hypothalamus?
High free T4 with strongly suppressed TSH
Normal free T4 with a clearly elevated TSH
High free T4 with a clearly elevated TSH after taking no medication
Low free T4 with a low or inappropriately normal TSH
7. Why are newborns commonly screened for congenital hypothyroidism?
Congenital hypothyroidism always causes obvious symptoms at birth.
Every newborn naturally has permanent hypothyroidism.
The screening predicts all thyroid problems that could occur in adulthood.
Early detection and treatment can help prevent serious developmental harm.
8. Which symptom combination warrants urgent medical help rather than waiting for a routine thyroid appointment?
Gradually developing dry skin and mild constipation
Several weeks of tiredness with no sudden change
Severe confusion, extreme drowsiness, slowed breathing, or marked deterioration
Mild neck discomfort after talking for a long time
9. A person suspects hypothyroidism and considers taking a high-dose iodine supplement without medical advice. Which statement is most accurate?
High-dose iodine reliably corrects every cause of hypothyroidism.
Iodine has no relationship to thyroid hormone production.
Extra iodine is not universally appropriate and can disrupt thyroid function in some people.
Any supplement sold without a prescription is harmless to the thyroid.
10. In regions where iodine intake is generally sufficient, which condition is a common cause of primary hypothyroidism?
Graves’ disease
Type 1 diabetes
Hashimoto’s thyroiditis
Cushing syndrome
11. Which blood-test pattern is most consistent with overt primary hypothyroidism?
Low TSH and high free T4
High TSH and low free T4
Low TSH and normal free T4
High TSH and high free T4
12. Several months after giving birth, a person develops fatigue and cold intolerance following a brief period of palpitations and heat intolerance. Which thyroid condition can follow this pattern?
Postpartum thyroiditis
A toxic thyroid nodule
Thyroid cancer in every case
Congenital hypothyroidism
13. Someone taking levothyroxine learns they are pregnant. What is the most appropriate next step?
Contact their healthcare professional promptly because thyroid hormone needs and monitoring may change.
Double every dose without speaking to a clinician.
Wait until symptoms appear before mentioning the pregnancy.
Stop the medication until the second trimester.
14. A person takes levothyroxine each morning. Which routine generally supports consistent absorption, provided it matches their clinician’s instructions?
Changing the dose whenever fatigue occurs
Taking it consistently and separating it from interfering iron or calcium products
Taking it at a different time each day with varying meals
Stopping it whenever a blood test returns to the reference range
15. A person’s TSH rises after they begin taking their levothyroxine at the same time as an iron supplement. What is a plausible explanation?
Levothyroxine prevents the body from absorbing any iron at all.
Iron permanently destroys thyroid hormone in the bloodstream.
Iron can reduce levothyroxine absorption when the products are taken too close together.
TSH cannot be affected by how thyroid medicine is absorbed.
16. Which statement best describes hypothyroidism?
The thyroid releases excessive hormone in short bursts.
The body has too little thyroid hormone activity for its needs.
The pituitary permanently stops producing every hormone.
The immune system cannot respond to infections.