One of the things I find striking about the above list is how common these were in my patients even before COVID. When somebody is experiencing tiredness and/or fatigue, it can easily lead to depression, and - likewise - depression can lead to tiredness and fatigue. (For the geeks out there, a common cytokine, Interleukin 6, is known to contribute to both depression and fatigue). Fatigue can cause and be caused by a whole host of other physiological, hormonal, and neurological problems. These disruptions can be caused by stress, trauma, lack of adequate nutrition, poor sleep, and the lack of movement—most of these were disrupted during the last two years.
As we move out of the acute phase of the Covid pandemic, I have some concerns that the physical fatigue caused during the last two years will just be diagnosed as a mental health condition. Not having enough physical laboratory diagnoses isn't a new problem, it's just likely going to be exaggerated in this (almost) post-pandemic phase.
Additionally, we need to recognize that most medical professionals have also experienced additional trauma from the pandemic. It’s in our own best interest to help them as much as possible to understand that we are not at our best and that we want to align with them to be curious to why we are fatigued.
If you’re experiencing extreme fatigue, or supporting someone dealing with fatigue and depression, and/or anxiety, it’s helpful to start differentiating these symptoms before you meet with your healthcare provider. The PROMIS Profile, from Health Measures, referenced on the CDC website, can be helpful to bring to the provider to start this conversation.
Next, we need to advocate for basic labs that are helpful in assessing fatigue, especially with accompanying depression. Here are some of the labs that the CDC and I both think are important to assess in this post COVID world:
Basic physiology testing: These tests are like checking the oil and gas level in your car.
Complete Blood Count (CBC) looks at the functioning of red and white blood cells and platelets.
Comprehensive Metabolic Panel (CMP) looks at electrolytes, liver function, and kidney function.
Urinalysis looks at what your kidneys are excreting, and for urinary tract infections
Inflammation markers:
C-Reactive Protein (CRP) is an inflammation marker. Inflammation needs to be low, and as it goes up, people experience fatigue and depression.
Ferritin is an iron storage molecule that often seems to increase with a Covid infection and is considered an inflammation marker. However, Ferritin levels below 50 ug/ml can cause fatigue and depression in women.
Thyroid Function: TSH and T4. Thyroid hormone significantly impacts our energy levels. Hashimoto's thyroiditis is a common thyroid condition and can increase after high inflammation events such as covid.
Vitamin D: Low Vitamin D has been linked to worse outcomes with COVID respiratory viruses in general; it is linked to cancers and autoimmune conditions.
Autoimmune function tests: Stressful events can increase the likely hood of autoimmune disease. There is some concern that people post COVID will have more autoimmune diseases such as Celiac, Hashimoto's thyroiditis, Guillain-Barré syndrome, cold agglutinin syndrome (CAS), and autoimmune hemolytic anemia. Sometimes these conditions start slow and build over time. Catching the spike in antibodies against these early helps lower the damage they can do. Here are some tests to request depending on your symptoms: