

Recognising the signs and symptoms and signs of post-viral fatigue is a step towards relief from a condition that can severely affect your quality of life. Renowned consultant physician and endocrinologist Dr Paul Jenkins details what people should look out for, its relation to hormone conditions and how post-viral fatigue is diagnosed.

The terms post viral fatigue syndrome (PVFS), chronic fatigue syndrome (CFS), or myalgic encephalomyelitis (ME) describe a devastating and complex disorder. Long Covid is another form of this disease albeit with a few specific nuances.
However, these are the symptoms and there can be a number of hormonal disorders which can also cause similar symptoms or worsen them.
The main hormonal disorders which can exaggerate or mimic some post-viral symptoms are those of:
An underactive thyroid gland causes low levels of thyroid hormone resulting in slowing of the body’s metabolism. It is characterised by fatigue, weight gain, feeling cold, sluggish, hair loss, dry skin and poor memory.
The adrenal glands produce the critical hormone, cortisol, which is our main stress hormone and allows us to respond to physical stress. Failure of the adrenals to produce enough cortisol is a rare but potentially catastrophic disease and requires urgent assessment and treatment. Patients often complain of ‘adrenal fatigue’ - a term which encompasses many of the symptoms of post-viral fatigue and which is usually the underlying illness.
The onset of menopause can also result in fatigue, temperature fluctuations and poor memory. It can certainly worsen post-viral fatigue.
Vitamin D is critical to many of the body’s functions including the immune system. We obtain most of our vitamin D through exposure of skin to sunlight, and therefore living in the UK, as well as those of darker skin pigmentation are very prone to having low levels. Deficiency is also characterised by fatigue, weak muscles, brain fog as well as impaired recovery from illnesses especially viral infections.
Yes, it can affect anyone but is more common in
The diagnosis is made on the basis of a compatible clinical history and exclusion of other hormonal causes.
No, but it certainly can help relieve some of the symptoms.
Dr Paul Jenkins can provide expert, highly-skilled endocrinology services if you’re looking for assistance. Visit his Top Doctors profile to get in touch.
Endocrinology, Diabetes & Metabolism in W1G Marylebone London