The following conditions may be associated with De Quervain's thyroiditis: 
Rheumatoid arthritis Sjogren syndrome Ulcerative colitis Urticaria Thyroid malignancy
What is the underlying cause or mechanism of De Quervain's thyroiditis?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What is the underlying cause or mechanism of De Quervain's thyroiditis? [/INST] \n The following conditions may be associated with De Quervain's thyroiditis: 
Rheumatoid arthritis Sjogren syndrome Ulcerative colitis Urticaria Thyroid malignancy</s>