Excessive (or chronic) fatigue is a common symptom across many endocrine disorders. Although it is something difficult to measure, fatigue can be both physical and mental. It can impact a person's ability to function and concentrate on everyday tasks. The question is, what's considered normal tiredness and when does it cross the line toward excessive fatigue?

The Following Circumstances Are Associated With Normal Tiredness:

• Less energy related to aging
• Not sleeping for the required amount of time (seven to eight hours of sleep each night for adults 18 and up)
• Lacking quality or deep sleep, even when getting enough hours
• Too much caffeine consumption (diminishes sleep quality at night)
• Overworking the body or staying too busy without refueling or proper nutrition
• Too little activity AKA couch potato syndrome, which ironically leads to more tiredness
• Medications that cause drowsiness (antihistamines such as those in cold and flu meds, prescription pain meds, beta blockers for heart disease, or anti-depressants)

It's Time To See A Doctor If: 

• Fatigue persists for two to four weeks
• Fatigue is accompanied by depression, grief, or stress
• Fatigue is accompanied by chest pain, shortness of breath, irregular heart rate, or dizziness
• Fatigue is accompanied by muscle or joint pain not associated with exercise or injury
• Fatigue interferes with day to day activities