What Causes Afternoon Or Evening Fatigue?

Afternoon or evening fatigue can have various causes, ranging in severity from 'minor' to 'very serious'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.

Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose afternoon or evening fatigue, we could:

Research the topic
Find a doctor with the time
Use a diagnostic computer system.

The process is the same, whichever method is used.

Step 1: List all Possible Causes

We begin by identifying the disease conditions which have "afternoon or evening fatigue" as a symptom. Here are five possibilities:

Hypoglycemia
Caffeine Intoxication
Adrenal Fatigue
Hypothyroidism
Low Estrogens

Step 2: Build a Symptom Checklist

We then identify all possible symptoms and risk factors of each possible cause, and check the ones that apply:

craving for salt

negative reaction to coffee

refined sugar consumption

poor tolerance of heat

sexual abuse during childhood

possible stress-induced arthritis

temple-based headaches

history of shingles

meal-related bloating

low free T4

adrenal insufficiency

eyelid twitch

... and more than 140 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of afternoon or evening fatigue:

Cause	Probability	Status
Hypoglycemia	92%	Confirm
Adrenal Fatigue	17%	Unlikely
Hypothyroidism	4%	Ruled out
Low Estrogens	2%	Ruled out
Caffeine Intoxication	1%	Ruled out

* This is a simple example to illustrate the process

Arriving at a Correct Diagnosis

The Analyst™ is our online diagnosis tool that learns all about you through a straightforward process of multi-level questioning, providing diagnosis at the end.

If you indicate being fatigued, The Analyst™ will ask further questions including this one:

Do you have fatigue that gets worse as the day progresses (afternoon or evening tiredness)?

Possible responses:

→ Don't know
→ No
→ Sometimes / moderately
→ Often / moderately
→ Often / severely

Based on your response to this question, which may indicate either absence of evening/afternoon fatigue or fatigue that worsens during the day, The Analyst™ will consider possibilities such as:

Caffeine Intoxication

Caffeine is known to cause periods of exhaustion.

Estrogens Low

Hypoglycemia

Hypothyroidism

Low Adrenal Function / Adrenal Insufficiency

Fatigue That Worsens During The Day