Thyroid nodules are lumps (growths) made up of abnormal cell clusters that develop in the thyroid gland, located at the base of your neck. They can be solid, fluid-filled, or a mixture of both.

Different types of pimples can have various appearances, causes, and treatments. Common types of inflamed pimples include papules, pustules, nodules, cysts, blackheads, and whiteheads. You're most ...