AKA Hyperthyroid Crisis or Thyroid storm
Presents as a life threatening exacerbation of Hyperthyroidism.Despite early recognition and treatement, mortality is still 10 % and upto 30% when presents with Hyperthermia, Cardiac failure and arrhythmia.
Precipitating Factors of Thyrotoxic Crisis-

Acute illness (e.g. stroke, infection, trauma, Diabetic Ketoacidosis or DKA)
Surgery (especially subtotal thyroidectomy when patient is ill-prepared)
Radioiodine treatment of a patient with partially treated …

Hypothyroidism is an endocrine disorder caused by deficiency of Thyroid hormone which results in systemic manifestation of a spectrum of symptoms.
Prevalence : Primary hypothyroidism is 1:100 but increases upto  1:20 if patients with subclinical hypothyroidism are included. But  in Mountainous region of Nepal, Iodine deficiency is common.
Female:male= 6:1
Etiology or Causes of Hypothyroidism:
Autoimmune or Hashimoto’s Disease and Iatrogenic causes account for maore …