Typical hypothyroid symptoms include the following:

• Fatigue
• Weight gain or difficulty losing weight
• Brain fog
• Difficulty concentrating
• Depression
• Sleep disorder (too much or too little sleep)
• Constipation
• Cold intolerance
• Fatigue
• Dry skin
• Brittle nails
• Hair loss or coarse hair
• Muscle aches
• Heavy periods
• Slowed heart rate
• Slowed reflexes

Hypothyroidism crisis can develop in poorly controlled hypothyroid patients, patients who develop an unrelated acute illness, or in those unaware they have hypothyroidism. Hypothyroidism crisis is very dangerous and needs immediate medical need as it can result in coma. The hypothyroidism crisis is characterized by:

• Extreme intolerance to cold and shivering
• Slow labored breathing
• Slow heart rate
• Extreme lethargy
• Loss of consciousness