Overview of the management of TED. An individualized approach to the management of TED, based on disease activity, severity, duration, trend across time, impact of the disease on daily living, treatment goals, patient age, and comorbidities, as well as the availability and relative costs of therapies, must be advised. Wherever possible, the task force members ranked therapeutic approaches as either “preferred,” “acceptable,” or “may be considered” (see Section 2.1. for definitions). 1See Figure 1. 2Except for the mildest cases improving with local measures. 3See Table 8. 4In most patients with mild TED, a “watchful monitoring” strategy is sufficient (it includes simple measures, see Section 5.1 and Fig. 1). Selected cases (with a significant decrease in QOL) may be treated as moderate-to-severe TED. 5In patients with symptomatic inflammatory soft tissue involvement or if radioactive iodine is used (oral glucocorticoids prophylaxis). 6Particularly in countries that are selenium insufficient. 7Standard treatment—IVGC (cumulative dose 4.5 g). 8In selected patients, a higher cumulative dose of methylprednisolone (7.5 g) may be considered. 9In patients with prominent soft tissue involvement and diplopia. 10In patients with a short duration of TED (< 9 months). 11In patients who are intolerant or resistant to IVGC. 12In selected patients with moderate-to-severe TED, a “watchful monitoring” strategy may be acceptable. 13See Section 7.3.2, and Supplementary Figure S2a, b. 14If there is coexistent active disease, then medical treatment as for moderate-to-severe disease is indicated in parallel with surgical treatment. 15High doses of IVGC (500–1000 mg of methylprednisolone) for 3 consecutive days or on alternate days during the first week. IVGC, intravenous glucocorticoid.