Factitious thyrotoxicosis and thyroid hormone misuse or abuse.

Area of Science:

• Endocrinology
• Toxicology

Background:

• Factitious thyrotoxicosis (FTT) is a form of thyroid hormone abuse.
• Individuals often misuse thyroid hormone for weight loss and body composition changes.
• It is associated with Munchausen syndrome and seen in athletes/bodybuilders.

Purpose of the Study:

• To define factitious thyrotoxicosis.
• To highlight the common motivations behind thyroid hormone abuse.
• To emphasize the diagnostic challenges and potential severe consequences of overlooked thyroid hormone abuse.

Main Methods:

• Literature review on factitious thyrotoxicosis.
• Analysis of clinical presentations and motivations.
• Discussion of diagnostic indicators and potential health risks.

Main Results:

• FTT is characterized by voluntary, concealed excessive thyroid hormone intake.
• Commonly involves thyroxine (T4), liothyronine (T3), or thyroid extracts.
• Dietary supplements can contain significant amounts of thyroid hormones.
• Abuse is prevalent among those seeking body composition changes, including athletes.

Conclusions:

• Diagnosis of FTT should be considered when hyperthyroidism symptoms are atypical.
• Early recognition and intervention are critical to prevent severe, life-threatening outcomes.
• Awareness of thyroid hormone abuse in various populations is essential for healthcare providers.