As more COVID-19 patients worldwide recover from their infection, a new complication of the virus is being reported: Long COVID, including a range of symptoms that can last weeks or months after first being infected or can even appear weeks after initial symptoms have resolved. It can happen to anyone who has had COVID-19, even if the illness was mild, or they had no symptoms.

Long COVID can affect nearly every organ with sequelae including respiratory system disorders, nervous system and neurocognitive disorders, mental health disorders, metabolic disorders, cardiovascular disorders, gastrointestinal disorders, malaise, fatigue, musculoskeletal pain, and anemia.

Common long COVID symptoms include:

  • extreme tiredness (fatigue)
  • shortness of breath
  • chest pain or tightness
  • problems with memory and concentration (“brain fog”)
  • difficulty sleeping (insomnia)
  • heart palpitations
  • dizziness
  • pins and needles
  • joint pain
  • depression and anxiety
  • tinnitus, earaches
  • feeling sick, diarrhoea, stomach aches, loss of appetite
  • a high temperature, cough, headaches, sore throat, changes to sense of smell or taste
  • rashes
What causes long COVID?

Although researchers have exhaustively surveyed the diverse symptoms of long COVID, no clear explanation for them exists. More recently, researchers have reported that initial disease severity does not correlate positively to post-COVID-19 symptom severity, but rather, frequently affects healthier patients that did not obtain medical care.

Studies have shown that many people with long COVID have problems with multiple organs  suggesting that it is a multisystem disorder. With evidence that fragments of the virus, such as protein molecules, can persist for months , in which case they might disrupt the body in some way even if they cannot infect cells.

A further possibility is that long COVID is caused by the immune system going haywire and attacking the rest of the body.

In other words, long COVID could be an autoimmune disease. Some of those immune changes after viral infection might linger — as has been seen in the aftermath of other viral infections. Researchers have found altered levels of cytokines — molecules that help to regulate immune responses — in the blood of people who have had COVID-19, suggesting that the immune system is indeed out of balance, as well as protein markers suggesting neuronal dysfunction.

It seems unlikely that there is a single, neat explanation for long COVID. Most researchers now suspect several mechanisms are at work, so one person’s long COVID might be profoundly different from another’s.

Many large medical centers are opening specialized clinics to provide care for people who have persistent symptoms or related illnesses after they recover from COVID-19. Support groups are available as well.

Most  groups have formed on social media sites. There is an active international long COVID patient advocacy movement which includes research led by patients themselves. In many of these groups, individuals express frustration and their sense that their problems have been dismissed by medical professionals.

how can we help?

Hyperbaric oxygen therapy is currently being used and studied as an effective form of treatment for lingering COVID-19 symptoms due to its ability to reverse hypoxia, reduce neuro-inflammation, and improve tissue oxygenation amongst other benefits.

The uncontrolled inflammatory response seen ın Covid, is referred to as a cytokines storm. This cytokine release is characterized by an increase in IL-1, IL-6, TNF-α and a change in macrophages population. Thus, COVID-19 can cause neuroinflammation, that might be prolonged and lead to signs of post-COVID-19 syndrome.

The Micro-infarcts and neuroinflammation are important causes of local hypoxia, and specifically neurological hypoxia. One of the options to reverse hypoxia, reduce neuroinflammation and induce neuroplasticity is hyperbaric oxygen therapy (HBOT).

Hyperbaric oxygen therapy (HBOT) includes the inhalation of 100% oxygen at pressures exceeding 1 atmosphere absolute, thus enhancing the amount of oxygen dissolved in the body tissues. During HBOT, the arterial O2 tension typically exceeds 2000 mmHg, and levels of 200-400 mmHg occur in tissues.

Even though many of the beneficial effects of HBOT can be explained by improvement of tissue oxygenation, it is now understood that the combined action of hyperoxia and hyperbaric pressure, triggers both oxygen and pressure sensitive genes, resulting in inducing regenerative processes including stem cells proliferation and mobilization with anti-apoptotic and anti-inflammatory factors.


At Poseidonia Healthcare, we understand most of our patients have been let down or not recovered using the traditional healthcare system. Many have gone through years of misdiagnosis and side effects from traditional treatments.

We supply the most comprehensive anti-aging treatments all in a relaxing environment, complete with professional staff. We combine Hyperbaric Oxygen Therapy in spacious chamber including video entertainment, with Extracorporeal blood oxygenation and ozonation (EBOO).

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