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Symptoms of Thyroid Disease
Symptoms of Thyroid Disease

Thyroid disease encompasses several diagnoses. While general categories of thyroid disease symptoms—sleep changes, weight changes, bowel problems, for example—can overlap, exactly how these manifest is quite different from condition to condition. In fact, symptoms of hyperthyroidism (overactive thyroid) and hypothyroidism (underactive thyroid), the two most common types of thyroid disease, are often opposite, though they affect the same body system.
Furthermore, thyroid concerns such as goiter, thyroid cancer, and specific versions of hypothyroidism and hyperthyroidism, such as Graves’ disease, can bring about other symptoms that can be unique to or more pronounced with these diagnoses.

There is no single symptom or cluster of symptoms that lead to a definitive diagnosis of hyper- or hypothyroidism. Both can affect the same part of the body or system, but in different ways.

Weight Changes

Unexplained weight changes can be a sign of hypothyroidism or hyperthyroidism.

Note, however, that you can be hypothyroid and losing weight, underweight, or unable to gain weight. Or, you may be hyperthyroid and find that you can’t lose weight, even with a healthy diet and exercise.

Temperature Issues

Sensitivity to temperature can be a symptom of both forms of thyroid disease.

Fatigue and Sleeping Problems

Sleep issues and general fatigue—which are only worsened when you don’t get a good night’s rest—are common complaints of people with thyroid issues. At times, they can be so profound that they greatly impact one’s daily life.

Mental Health Problems

Depression, anxiety, and other mood disorders can be associated with thyroid problems.

Neck or Throat Discomfort/Abnormalities

These symptoms can be associated with hyperthyroidism, hypothyroidism, autoimmune thyroid disease, nodules, goiter (an enlarged thyroid), and thyroid cancer.

  • A feeling of swelling or fullness in the neck
  • Visibly enlarged neck
  • Discomfort wearing turtlenecks or neckties
  • Difficulty swallowing or breathing
  • Tenderness in the neck
  • A hoarse, raspy voice
Hair, Skin, and Nail Changes

Hair, skin, and nails are vulnerable to thyroid hormone imbalances

Bowel Problems

The last thing you may be thinking of when you have digestive troubles is your thyroid, but gastrointestinal symptoms are common, reinforcing the far-reaching effects of this important gland.

Menstrual Irregularities and/or Fertility Concerns

Thyroid conditions, especially hypothyroidism, can increase your risk of infertility, may interfere with the success of assisted reproduction treatments, and may increase the chances of recurrent miscarriage. Menstrual irregularities are also common.

Eye Problems and Vision Changes

A number of eye-related symptoms and changes are common in hypothyroidism, hyperthyroidism, and Graves’ disease.

Common symptoms include:

  • Eye dryness
  • Gritty feeling in the eye
  • Blurry vision
  • Eye redness
  • Swollen, puffy, or watery eyes
  • Sensitivity to light
  • Double vision
  • Proptosis (eye-bulging), one of the most distinctive symptoms of Graves’
  • “Lid lag”—when your upper eyelid doesn’t smoothly follow movement of the eyes when you look down
Cognitive Problems

“Brain fog,” a term used to describe a group of cognitive symptoms that is often used by patients and doctors alike, is a symptom common to hypothyroidism specifically. Brain fog may involve:

  • Difficulty concentrating
  • Short-term and long-term memory problems
  • Forgetfulness
  • Lack of focus
  • Feeling “spaced out”
  • Confusion
  • Difficulty thinking clearly
Musculoskeletal Problems

When you’re hypothyroid, you may experience aches and pains in your muscles and joints, especially in your arms and legs. Fibromyalgia-like pain is also common for people with an underactive thyroid. If you are hyperthyroid, you may have pain or unusual weakness in the upper arms, and calves.

With hypothyroidism, there is also a greater risk of developing carpal tunnel syndrome in your hands, which can cause weakness and pain in your forearms, wrists, hands, and fingers. A similar condition, tarsal tunnel, is also a risk, causing weakness and pain in the shins, ankles, feet, and toes.

Rare Symptoms

While rarer than the above, these symptoms must be considered both individually and in the context of all of the issues a patient presents with. In some cases, these could be some of the first tip-offs that a thyroid diagnosis should be investigated.

Rare symptoms of hypothyroidism include:

  • High cholesterol levels: If you have high cholesterol levels, especially when they are not responsive to diet, exercise, or cholesterol-lowering medications such as statins, you may have undiagnosed hypothyroidism.
  • Myxedema: This skin condition, which can occur in severe hypothyroidism, involves the deposition of mostly hyaluronic acid in the lower layer of the skin, causing coarse hair and skin, puffiness of the face or all over, tongue enlargement, and hoarseness.

Rare symptoms in hyperthyroidism include:

  • Low cholesterol levels: Unusually low cholesterol levels that do not correlate with diet, weight, and exercise may be a sign of hyperthyroidism.
  • Graves’ ophthalmopathy: This condition is most easily recognized by proptosis, in which your eyeballs appear to be bulging and your eyes may not be completely covered when your eyelids are closed.
  • Rashes: There are two unusual rashes associated with hyperthyroidism and Graves’ disease: Pretibial myxedema, also known as thyroid dermopathy, can appear on the skin of the shins. A bumpy rash known as miliaria can appear on the face.


While some of the thyroid symptoms you may be experiencing may seem more annoying than harmful, remember that your thyroid gland and the hormones it produces impact your metabolism, heart, digestion, brain, bones, and more.

Getting an early diagnosis and effectively managing your thyroid symptoms can help lower the risk of possible complications

Complications of hypothyroidism include:

  • Neuropathy: Low levels of thyroid hormone can result in nerve damage, called neuropathy, characterized by tingling and numbness in the extremities. A painful foot condition known as plantar fasciitis may also develop in your feet, caused by edema (fluid buildup) around the nerves.
  • Difficulty conceiving a baby: Even mild hypothyroidism can impede ovulation and the proper implantation of an embryo, making it difficult for a woman to conceive.
  • Pregnancy complications: Hypothyroidism may put a pregnant woman at a higher risk of miscarriage, placental abruption, preterm delivery, and neonatal death.

Complications of hyperthyroidism include:

  • Osteoporosis: Bone weakening makes a person more prone to breaking bones with even minor bumps or falls.
  • Atrial fibrillation: This heart arrhythmia can lead to serious problems like stroke or heart failure. It is more common in older people.
  • Pregnancy complications: Moderate-to-severe hyperthyroidism in a pregnant woman can sometimes lead to preterm birth, stillbirth, and possibly congenital malformations.

If you have symptoms of thyroid disease, consult with your doctor, who will do a thorough physical exam, ask you details about your symptoms, and do a blood test to check your thyroid levels. Fortunately, in most cases, both hypothyroidism and hyperthyroidism can be effectively treated.


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