When talking about muscle soreness and fatigue, it is important to note that pretty much everyone experienced them at some point in their lives.

If you were trying to change your lifestyle and start a new exercise routine, for example, in the first few days you will experience fatigue and soreness simply because your body is not used to it and it needs time to adjust to this new habit you`ve just picked up.

Since this condition is normal and does not pose a threat to your physical health, we will not be addressing it today. Today we are going to be talking about muscle fatigue and soreness as a symptom of an illness.

Rheumatoid Arthritis

Arthritis is not something people will usually think of when confronted which these symptoms, but it might be the case if the patient is:


This is a chronic disease affecting the entire body which causes muscle fatigue, pain through the body, tingling sensation in the muscles as well as depression and anxiety. I`d like to point out that this is a serious condition, and self-diagnosis is out of the question – you must speak to your doctor to get a clear picture of what is going on!

Muscle fatigue (along with pain) is the predominant symptom of this disease and it can be clearly distinguished from the fatigue that occurs naturally. Patients will often feel fatigued just after waking up, after doing the most miniscule tasks, extremely fatigued after exercise (if they manage to get through it that is) and generally too fatigued to function properly.

Psychological Causes

It is a well known fact that psychological problems can manifest themselves physically, and vice versa. One of the mayor psychological problems people face today is definitely depression.

Depression will affect both the mind and the body, developing a feeling of worthlessness in people, making them more irritable, sensitive to light, noise and basically prevent them from function normally.

Muscle fatigue and, in some cases pain, will usually accompany these psychological symptoms.

Chronic Fatigue Syndrome

CFS causes muscle fatigue (as the name suggests) that does not go away after sleep or an adequate amount of rest. It is most common amongst adults from 20 to 40 years of age and it is more common in women.

Depending on the severity of the disease, we can classify it as:

  • Mild – patients will need to schedule some days for rest, but they will function normally
  • Moderate – characterized by reduced mobility, sleeping problems and frequent sleeping in the afternoon
  • Severe – people with severe CFS will be able to perform only the most basic tasks (washing up in the morning, brushing their teeth) but their mobility will be reduced significantly and they will have difficulty concentrating






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