Hello dear user: Thank you for asking on HCM! You had lobectomy of thyroid gland on 12-18-2012. Can you tell me please when you strat to feel dizzznes? I mean how long after the operation? Are you taking therapy for thyroid ? Did you have vommiting? After operation until now may I know please the blood hormone level? TSH Level Ft3 Ft4 TG (TIROBINDING GLOBULIN ) Iam telling you that are some endocrine diseases which cause dizziness. Thyroid disease :Abdnormalities of the thyroid may also cause dizziness as : Hyperthyroidism(too much thyroid hormone) may cause palpitation, short of breath (that you feel) and lighttheadednness. Hypothyroidism(too little thyroid hormone)may cause low blood pressure and a decreased heart rate, weakness. Also are and two other pathology that causes dizziness: Diabetes So you must t o check blood test for Glucose test Addison:s disease :occurs when the adrenal glands do not produce enough cortisol you must to check the cortizol leven on 8 oclock in morning. Before that my advise is:To check you problem with ororinolog to see if these vertigo may be is caused by a problem in the balance centers of the inner ear called the vestibular system. If haven’t Meniere”s Disease your dizznes have endocrine problems So please you must to check • Thyroid hormone level ,T4,T3 Tg • Cortizol level • Glucoze test .My advise is take opoinion by Endocrinologiest and otorinilarinolog . Hope i was helfull,Please ask me for fouther information Best regards Klodiana poshi