July 26, 2020 3.56pm EDT<\/p>\n\n\n\n
We\u2019re now all too familiar with the common symptoms of COVID-19: a fever, dry cough and fatigue. Some people also experience aches and pains, a sore throat, and loss of taste or smell.<\/p>\n\n\n\n
Sufferers with mild illness might expect to get better\u00a0after a few weeks<\/a>. But there\u2019s mounting evidence this isn\u2019t the case, and COVID-19 may leave a long-lasting impression on its victims \u2013 not just the most severely affected or the elderly and frail.<\/p>\n\n\n\n On the surface, COVID-19 is a lung disease. The SARS-CoV-2 coronavirus infects cells of the respiratory tract and can cause life-threatening pneumonia.<\/p>\n\n\n\n However, the full range of symptoms affects multiple parts of the body. An\u00a0app that records daily symptoms<\/a>\u00a0developed at King\u2019s College London has tracked the progress of more than 4 million COVID-19 patients in the United Kingdom, Sweden and the United States.<\/p>\n\n\n\n Besides the well-described symptoms of fever, cough and loss of smell are other effects, including fatigue, rash, headache, abdominal pain and diarrhoea. People who develop more severe forms of the disease also report<\/a> confusion, severe muscle pains, cough and shortness of breath.<\/p>\n\n\n\n About 20%<\/a>\u00a0of those infected with COVID-19 require hospitalisation to treat their pneumonia, and many need assistance with oxygen. In about 5% of cases the pneumonia becomes so severe patients are admitted to\u00a0intensive care for breathing support<\/a>.<\/p>\n\n\n\n People with severe COVID-19 seem to show an altered immune response even in the disease\u2019s early stages. They have fewer circulating immune cells, which fail to efficiently control the virus, and instead suffer an exaggerated inflammatory response<\/a> (the \u201ccytokine storm<\/a>\u201d).<\/p>\n\n\n\n This is increasingly recognised as one of the main factors that makes the disease so serious in some patients. Suppressing this exaggerated response with the immunosuppressant dexamethasone<\/a> remains the only treatment that reduces death rates in those who require oxygen support or intensive care.<\/p>\n\n\n\n Read more: Dexamethasone: the cheap, old and boring drug that’s a potential coronavirus treatment<\/a><\/strong><\/em><\/p>\n\n\n\n Patients with severe COVID-19 describe a far more complex range of symptoms than would normally be seen with pneumonia alone. This can include brain inflammation (encephalitis), causing confusion and reduced consciousness. Up to 6% of severe sufferers may have a stroke<\/a>.<\/p>\n\n\n\n Pathology studies and autopsies of patients who died from COVID-19 reveal the expected features of severe pneumonia or acute respiratory distress syndrome (ARDS), with extensive inflammation and scarring. ARDS occurs when there\u2019s sudden and widespread inflammation in the lungs, resulting in shortness of breath and blueish skin.<\/p>\n\n\n\n Uniquely, however, they also reveal the virus seems to directly cause inflammation of the small capillaries or blood vessels, not just in the lungs but in multiple organs, leading to blood clots and damage to the kidney and heart<\/a>.<\/p>\n\n\n\n Anyone with a severe disease would be expected to suffer long-lasting consequences. But COVID-19 seems to have persistent symptoms even in those with milder forms of the illness.<\/p>\n\n\n\n Social media is replete with stories of survivors afflicted by ongoing symptoms. Support groups have emerged on Slack<\/a> and Facebook<\/a> hosting thousands of people, some still suffering more than 60 days after infection. They call themselves \u201clong-termers\u201d or \u201clong-haulers\u201d.<\/p>\n\n\n\n One of the most well-known sufferers is Paul Garner, an infectious disease specialist at the Liverpool School of Tropical Medicine in the UK. He was infected in late March and his symptoms continue. In a blog post published by the British Medical Journal<\/a> he describes having a:<\/p>\n\n\n\n \u2026muggy head, upset stomach, tinnitus (ringing in the ears), pins and needles, breathlessness, dizziness and arthritis in the hands.<\/p><\/blockquote>\n\n\n\n These symptoms have waxed and waned but not yet resolved. He says this is:<\/p>\n\n\n\n \u2026deeply frustrating. A lot of people start doubting themselves\u2026 Their partners wonder if there is something psychologically wrong with them.<\/p><\/blockquote>\n\n\n\nIt\u2019s not just an infection of the lungs<\/h2>\n\n\n\n
It trips the immune system<\/h2>\n\n\n\n
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\n\n\n\nPersistent symptoms \u2018deeply frustrating\u2019<\/h2>\n\n\n\n