###Human: Is it difficult to treat subclinical hyperthyroidism? ###Assistant: Hi. I have gone through the query. It appears that you have had subclinical hyperthyroidism. This condition needs regular follow up tests and consult an endocrinologist even if you are not undergoing treatment for hyperthyroidism. If you plan for pregnancy, then it is necessary to have a constant follow-up with an endocrinologist before and during pregnancy. Yes, fluctuations in thyroid function test are common.