 [ Symptoms ] will a pimple show up in an mri my nephew had a small bump by his ear thought it was a pimple forming and woke up the next day and whole side of face was and still is swollen my sis took him to the doc and they have no clue as to what it is had an mri done should nothing and having biopsy today but my question will a pimple show on an mri [ Disease ] any medication including thyroid medications can cause an allergic reaction such as hives the incidence of hives with thyroid medication though is very low however there is a known association between hives and thyroid antibodies about a quarter of patients with long term hives chronic urticaria have antibodies to thyroid tissue and many of these patients are found to have low thyroid levels the patients who had the worst hives were also the ones more likely to have antibodies to thyroid tissue hives patients can also have antibodies to other immune mediated diseases such as lupus unfortunately treating the thyroid condition does not eliminate the hives