View Underactive Thyroid Symptoms Pics. Many symptoms of an underactive thyroid (hypothyroidism) are the same as those of other conditions, so it can easily be confused for something else. Signs and symptoms of thyroid problems depend on the type of problem, but may include weight gain or loss, heat or cold intolerance, sweating, fatigue, difficulty swallowing, a visible lump or swelling in the neck, irritability, puffiness in the face, or memory problems.

Symptoms of an underactive thyroid are often confused for something else, by patients and doctors.

Symptoms usually develop slowly and you may not realise you have a medical problem for several years. Symptoms of hypothyroidism can vary from mild to severe. In any event, all thyroid symptoms should be taken seriously. Sluggish thyroid symptoms check up.