The thyroid can be affected in many different ways.
In this article, you can read about some of the possible thyroid diseases.
Please do keep in mind that the items mentioned on this page do not make up every possibility, so a person could have such a condition despite not having one that is mentioned here.
Additionally, do not take this article as medical advice, as it is not intended to be used in that way, but only for general purposes.
If you're possibly dealing with a medical condition, then please consider talking with the proper person, such as someone who is trained in the field.
One area of thyroid diseases is hyperthyroidism.
In this, the thyroid produces excessive levels of hormones, such as T4 and T3.
A common type of this condition is known as Graves' disease.
Thyroid storm is another form, although it is rare (but, at the same time, it is a medical emergency as it can be life-threatening).
Hyperthyroidism can lead to various symptoms depending on the type and other factors.
Some possibilities include an intolerance to heat, loss of hair, cardiac arrhythmias, weight loss, and weakness.
Of course, this is not a comprehensive list.
Another category of thyroid diseases is called hypothyroidism.
You can think of it, in a way, as the opposite of hyperthyroidism, as it involves insufficient levels of hormones.
Hashimoto's thyroiditis is one of the conditions that can be related to this group.
Some of the early symptoms of hypothyroidism can include joint pain, goiter, and dry and itchy skin.