It has been reported that some patients have been misdiagnosed with Hashimoto's Disease, when in fact the correct diagnosis in their specific case was Underactive Thyroid.
Hypothyroidism or underactive thyroid is where your thyroid gland does not produce enough hormones. Symptoms of hypothyroidism include increased sensitivity to the cold, constipation, dry skin, weight gain, puffy face, hoarseness, muscle weakness, increased blood cholesterol, pain in joints, heavier periods, thinning hair, slowed heart rate, depression, impaired memory and an enlarged thyroid gland (goiter). It can be misdiagnosed for other endocrine diseases such as Hashimoto’s disease, Cushing’s syndrome, or Grave’s disease.