Subclinical hyperthyroidism is milder and different from hyperthyroidism because of the undetectable thyroid-stimulating hormone level, but it shares some of its symptoms. The difficulty in detecting subclinical hyperthyroidism makes it crucial to know which signs to look out for to immediately start hyperthyroidism treatment. There are some symptoms of subclinical hyperthyroidism that is different from its stronger version, but what makes these symptoms mainly subclinical is they are mild.
7 Subclinical Hyperthyroidism Signs to Keep in Mind
1. Irregular and Fast Heartbeats
Subclinical hyperthyroidism may cause your heartbeat to be irregular. You may also have a fast heartbeat or tachycardia and heart palpitations. This symptom is one of the symptoms of hyperthyroidism similar to subclinical hyperthyroidism.
2. Unusual Body Temperature
Another symptom of this subclinical thyroid disease is an unusual body temperature. Your overactive thyroid’s increased thyroid hormone levels may be causing your cells to expend a lot of energy and cause your body heat to rise. This may also lead to heat intolerance, a symptom also experienced by people with overt hyperthyroidism.
3. Muscle Weakness
There is a study that shows muscle weakness as being associated with subclinical hyperthyroidism. In this study, the treatment of this subclinical thyroid dysfunction also led to improvement in muscle strength and overall lumbar health. There is also a study that shows postmenopausal women with subclinical hyperthyroidism to be more prone to decreased bone density.
4. Increased Appetite and Weight Gain
This mild form of hyperthyroidism may cause your appetite to increase resulting in another symptom: weight gain. This is considered as an unusual symptom because of the increased metabolic rate of an overactive thyroid.
5. Restlessness and Anxiety
This subclinical thyroid disease may give you a restless feeling coupled with anxiety. You may feel shakiness, irritability, or tremors, and have great difficulty concentrating due to high levels of thyroid hormones.
6. Menstrual Irregularities
Due to the imbalance of your thyroid hormone levels, your menstrual cycle may also be affected. A study shows that menstrual irregularities may be caused by a thyroid dysfunction such as subclinical hyperthyroidism.
7. Unusual Bowel Movements
You may be experiencing frequent bowel movements or diarrhea if you have a subclinical hyperthyroidism. Gastrointestinal symptoms such as these are prevalent among hyperthyroid patients. You may also experience other similar symptoms of hyperthyroidism such as bloating, nausea, and vomiting.
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Your thyroid function tests may be showing your thyroid-stimulating hormone levels as usual but you’re not feeling completely healthy at all. These symptoms may be the best signs you can follow to realize you have a subclinical hyperthyroidism. If you live in an area where there is an iodine deficiency, you may be more prone to have this subclinical thyroid dysfunction. Even though it’s a milder form of hyperthyroidism, it’s harder to test for and has a few of its symptoms while also sharing some of the common symptoms of hyperthyroidism.
Do you know any other symptoms of subclinical hyperthyroidism? Share your thoughts and experience with us in the comments below!
Editor’s Note – This post was originally published on November 8, 2017 and has been updated for quality and relevancy.