This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of Thyroid, Subject name: Medicine
Which of the following is silent thyroiditis? 
Select and explain. 
A. Acute thyroiditis, B. Subacute thyroiditis, C. Hashimoto thyroiditis, D. Post-paum thyroiditis
D: Post-paum thyroiditis
Answer: D: Post-paum thyroiditis 
Explanation: Silent thyroiditis / Post-Paum thyroiditis It is an autoimmune mediated destruction of gland. It occurs after 3-6 months post-paum in about 5% of pregnancies. Patient first develops thyrotoxicosis which is followed by hypothyroidism and then resolution. It is characterised by: Normal ESR and presence of TPO antibodies RAIU is supressed No role of steroids Recovery is the rule