What is the difference between a goiter and nodule of thyroid?

A goiter is an enlargement of the thyroid gland, while a thyroid nodule is a solid or fluid-filled lump that forms in the thyroid gland.

Goiters can be caused by a variety of factors, including:

* Iodine deficiency

* Autoimmune conditions, such as Hashimoto's thyroiditis

* Inflammation of the thyroid gland

* Certain medications, such as lithium

* Pregnancy

Thyroid nodules can also be caused by a variety of factors, including:

* Age (nodules are more common in older adults)

* Family history of thyroid nodules

* Radiation exposure

* Certain medical conditions, such as Cowden syndrome

* Iodine deficiency

Most goiters and thyroid nodules are benign (non-cancerous). However, some thyroid nodules can be cancerous, so it is important to have any thyroid nodule evaluated by a doctor.

Symptoms of a goiter or thyroid nodule can include:

* Neck swelling

* Difficulty swallowing

* Hoarseness

* Coughing

* Shortness of breath

* Fatigue

* Changes in menstrual cycles

* Infertility

* Weight gain or loss

If you are experiencing any of these symptoms, it is important to see a doctor to get a diagnosis and treatment for your thyroid condition.