🧩 Medical Mnemonics


👀 Low RAIU in Thyrotoxicosis?

When the thyroid isn’t making hormone — just leaking it, receiving it, or faking it — radioactive iodine uptake (RAIU) drops.

Remember " 🎭  FACTITIOUS 🎭 "


▫Factitious thyrotoxicosis (e.g., levothyroxine abuse) 
▪Amiodarone-induced thyrotoxicosis (Type 2)
▫Congenital thyroiditis
▪Thyroiditis (subacute, silent, postpartum) 
▫ Iodine excess (Jod-Basedow)
▪Tumor (Struma ovarii) hormone, thyroid stays quiet 
▫Infiltrative disease
▪Overdose of iodine contrast 
▫Unusual causes: Interferon-induced or mixed mechanisms 
▪Suppressed TSH (central~Pituitary dysfunction)

#endocrinology
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