COVID-19 can produce an array of unpredictable effects that mark it apart from a regular cold or flu. Researchers are still uncovering the many ways the virus attacks the body but symptoms help to a provide visual map of these unsettling effects. As the virus has spread, health bodies have classified the symptoms based on their severity status.
A cytokine storm is an overreaction of the body’s immune system.
As Harvard Health explains, in some people with COVID-19, the immune system releases immune messengers, called cytokines, into the bloodstream out of proportion to the threat or long after the virus is no longer a threat.
“When this happens, the immune system attacks the body’s own tissues, potentially causing significant harm,” warns the health body.
As it explains, a cytokine storm triggers an exaggerated inflammatory response that may damage the liver, blood vessels, kidneys, and lungs, and increase formation of blood clots throughout the body.

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There have been some news reports of anti-inflammatory painkillers, such as ibuprofen, making coronavirus worse.
The Commission on Human Medicines has now confirmed there is no clear evidence that using ibuprofen to treat symptoms such as a high temperature makes coronavirus worse.
“If you have a cough, it’s best to avoid lying on your back. Lie on your side or sit upright instead,” advises the NHS.
To help ease a cough, try having a teaspoon of honey – but do not give honey to babies under 12 months, it adds.