Calcitonin itself does not typically cause specific symptoms as it is involved in regulating calcium metabolism and bone health. However, elevated levels of calcitonin may indicate underlying conditions such as medullary thyroid cancer, which can present with symptoms like a palpable thyroid nodule, neck swelling, hoarseness, difficulty swallowing, or enlarged lymph nodes. It is important to consult a healthcare professional for a proper evaluation if any concerning symptoms are experienced.