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Doctor insights on: What Is The Difference Between Hyperthyroidism And Hypothyroidism

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Dr. Ward Dean
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Dr. Su Fairchild
1,089 doctors shared insights

Hypothyroidism (Definition)

Hypothyroidism is also known as Underactive thyroid. Level, which can cause fatigue increased sensitivity to cold constipation dry skin unexplained weight gain puffy face hoarseness muscle weakness elevated blood cholesterol level muscle aches, tenderness and stiffness pain, stiffness or swelling in your joints heavier than normal or irregular menstrual periods thinning hair slowed heart ...Read more


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Is there a way to tell difference between hyperthyroidism and hypothyroidism without going to the doctors?

Is there a way to tell difference between hyperthyroidism and hypothyroidism without going to the doctors?

You can't: Hyperthyroidism is overactive thyroid, hypothyroidism is underactive thyroid. The symptoms are opposite each other, and are nonspecific. Most people who have symptoms that seem like they are thyroid related do not actually have thyroid disease when they are tested. The only way of being sure is to see a doctor and have a blood test (tsh, t4). ...Read more

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Dr. Ward Dean
Board Certified
37 years in practice
788K people helped
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Dr. Ward Dean
Board Certified
37 years in practice
788K people helped
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Dr my free T4 is 1.03 and TSH is 3.18 normal between .1 to 4.8 shown in result. I want to clarify i am having hypothyroid or hyperthyroid?

Dr my free T4 is 1.03 and TSH is 3.18 normal between .1 to 4.8 shown in result. I want to clarify i am having hypothyroid or hyperthyroid?

Neither: Hi. Maybe I'm missing yor point. You have a normal TSH and a normal free T4, and you're wondering if you're hypothyroid or hyperthyroid? You left out the correct answer...normal thyroid. Normal is normal. That sounds trite, doesn't it?! But true. Normal thyroid function is normal, not hypo, not hyper, but normal. If I'm missing the point, please clarify. Good luck! ...Read more

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Is it possible to be hyperthyroid with hypothyroid symptoms?

Is it possible to be hyperthyroid with hypothyroid symptoms?

Yes.: While some symptoms of hypothyroidism are the opposite of hyperthyroidism, some are the same! Both hypo and hyperthyroidism can cause fatigue, weight gain, and poor concentration. Or the symptoms could be unrelated to the thyroid. See your doctor to find out what caused the hyperthyroidism, make a plan for treating it, and then, if symptoms are still present, finding what else might be going on. ...Read more

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I was hypothyroid but now have hyperthyroid, what can I do?

I was hypothyroid but now have hyperthyroid, what can I do?

See your doctor: The most common cause would be that you are getting too much medication. Rarely, a patient with hypothyroidism will convert to graves' disease or autoimmune hyperthyroidism. This will require medication radioactive iodine treatment or surgery. ...Read more

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I was hypothyroid but now am hyperthyroid - should I discontinue my meds so I don't get more hyper?

No: This may be due to taking too much thyroid hormone, but stopping the thyroid pill would likely lead to too little thyroid hormone. Most often, in this situation, a dose adjustment is needed. This means working closely with the doctor who prescribed the thyroid hormone for you to find the "just right" dose for you.. ...Read more

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Dr. Quang Nguyen
770 doctors shared insights

Underactive Thyroid (Definition)

The thyroid makes thyroid hormone, the main one is t4, which is converted in other tissues to t3. An underactive thyroid makes too little thyroid hormone. You feel sluggish, bloated, constipated, cold. It is treated by taking replacement hormone levothyroxine. The thyroid also makes calcitonin, which is involved in calcium metabolism, but it is a weak hormone in ...Read more


Dr. Susan Wingo
451 doctors shared insights

Overactive Thyroid (Definition)

Hyperthyroidism, often called "overactive thyroid," is a condition where the thyroid secretes too much of the thyroid hormones. Common symptoms include heat intolerance, increased appetite, ...Read more


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Dr. Ward Dean
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