我们的病人是一个17-year-5-month-old女性使用锂盐治疗双相情感障碍。她一直放在Concerta,阿立哌唑和利之前切换到锂单一疗法由于有限的这些初始治疗的成功。她反应良好锂前两年直到大约3 - 4周的演讲中,她头晕时,热量不耐受,过度出汗、颤抖、心悸。由于这些症状,她停止服用锂和就医在初级保健提供者的(PCP)的办公室。卡式肺囊虫肺炎下令实验室检测显示“抑制TSH (< 0.02 mcIU / mL,正常范围:0.35 - -5.50)和游离T4升高(3.5毫微克/分升,正常范围:0.8 - -1.9),符合甲状腺机能亢进。当时她的锂水平< 0.3(正常范围:0.6 - -1.2更易/ L),可能由于不服从在过去的两个星期。卡式肺囊虫肺炎在周末收到了这些结果,病人被称为急诊科(ED),考试,她tachycardic (140 bpm),无热的,她的血压132/84毫米汞柱。甲状腺考试透露的无痛性甲状腺肿;没有明显的结节。重复在ED实验室检测证实生化甲状腺机能亢进(TSH: < 0.02 mcIU / mL,总T3: 351毫微克/分升,正常范围:55 - 209)和游离T4升高(3.7毫微克/分升)。 There was a prolonged QT interval on her EKG. Of note, our patient had no family history of autoimmunity or thyroid disease. Thyroid suppressive therapy was initiated with methimazole, 10 mg PO 3 times a day (0.46 mg/kg/day) as advised by the endocrinologist. She was also started on propranolol (60 mg/day∼0.92 mg/kg/day). The ESR, CRP, CBC, and BMP were normal. Thyroid autoantibodies (antithyroid peroxidase antibody, antithyroglobulin antibody, and thyroid stimulating immunoglobulin) were all negative. She was advised not to restart lithium and consult her psychiatrist. She was seen in the endocrine clinic about two weeks later, after being off-lithium for four weeks; her hyperthyroid symptoms had improved; however, she still had palpitations and heat intolerance, while her heart rate and blood pressure were still above the age appropriate ranges (101 bpm and 133/74 mm hg, respectively). She had mild tongue fasciculation but no exophthalmos. Repeat thyroid function tests showed a lower free T4 level (2.0 ng/dl) as compared with two weeks ago, while the TSH was still suppressed. A subsequent endocrine visit two weeks later showed a normalized free T4 (1.5 ng/dl) and improved clinical hyperthyroidism. As a result, propranolol was discontinued, while methimazole treatment was maintained. By three months after her initial presentation, the methimazole dose was reduced (10 mg b.i.d.) due to a borderline-low (0.8 ng/dl, normal range of 0.8 to 1.9 ng/dL), Methimazole was eventually discontinued after five months of initial presentation. At her last follow-up in the endocrine clinic (seven months after diagnosis of hyperthyroidism and several weeks after stopping methimazole), she was clinically and biochemically euthyroid (Table
1)。