The Unusual COVID-19 Symptoms You might not Heard

Learning about some less common symptoms may help you recognize COVID-19 if you or someone close to you develops it.

Loss of taste or smell

Earlier this month, the CDCTrusted Source added “new loss of taste or smell” to its list of COVID-19 symptoms.

When scientists at the University of California, San Diego studied responses from 59 people with COVID-19, they found that more than two-thirds of them reported loss of taste or smell.

Your sense of taste or smell may also be disrupted by other conditions, such as the flu or seasonal allergies. But in some cases, such sensory changes may be a warning sign of COVID-19.

Nausea, vomiting, or diarrhea

So far, the CDC hasn’t added nausea or other digestive complaints to its list of COVID-19 symptoms. However, early research suggests gastrointestinal distress is relatively common in people with COVID-19.

Recently, the authors of a new study from Stanford Medicine reviewed the medical records of 116 people who had tested positive for COVID-19.

They found that nearly one-third had digestive symptoms, including loss of appetite, nausea, vomiting, or diarrhea.

Rash, hives, or chickenpox-like lesions

When dermatologists in Lombardy, Italy, assessed 88 people who had tested positive for COVID-19, they found roughly 20 percent had skin symptoms.

Those skin symptoms consisted of a red rash, widespread hives, or chickenpox-like lesions.

“Patients may present with skin lesions on their feet or toes or red rashes that may resemble a skin infection at first glance,” Dr. Robert Glatter, an emergency physician at Lenox Hill Hospital in New York City, told Healthline.

“Many of these rashes may represent superficial clotting or even bleeding in the skin or extremities,” Glatter said.

Delirium, dizziness, or muscle weakness

Confusion, delirium, and other neurological symptoms have also been observed in some people with COVID-19, report researchers in JAMA Neurology.

Milder neurological symptoms, such as loss of taste or smell, headache, dizziness, or muscle weakness, may appear early in the illness. More severe neurological symptoms may develop later on.

“I have seen patients presenting with confusion and altered mental status,” Glatter told Healthline.

“Some have developed [brain inflammation] requiring admission for close neurologic monitoring,” he added.

Cardiovascular complications

COVID-19 may raise the risk of abnormal blood clotting, early reports suggest.

When clots form in small blood vessels in the feet or other extremities, it can cause minor skin symptoms.

When clots occur in the lungs, heart, or brain, it can cause more serious complications, such as pulmonary embolism, heart attack, or stroke.

“Clotting in general seems to be a significant issue,” Dr. Maxine Dexter, a pulmonary and critical care specialist at Kaiser Permanente, told Healthline.

“We are hearing reports from our ER colleagues about patients presenting with stroke and heart attack symptoms that end up being COVID-positive,” she said.

If the virus enters cells in the heart, it can also cause a heart infection known as myocarditis. This infection may cause chest pain, abnormal heart rhythms, and even heart failure.

“Some of the more sick people that we’ve seen have had these kinds of severe cardiac manifestations of coronavirus, and it’s been very tough to manage,” Cioe-Pena told Healthline.

Virus has free rein

According to Cioe-Pena, the wide variety of symptoms linked to COVID-19 isn’t surprising.

Because this coronavirus is so new, our bodies haven’t built up immunity to it.

As a result, “it gets free rein of the body,” Cioe-Pena said. “Once it’s in the lungs and the bloodstream, it’s able to travel around pretty easily.”

More research is needed to understand how the virus affects different cells in the body. Some symptoms may develop when the virus enters cells in certain organ systems, while other symptoms may be caused by inflammation that results from the body’s immune response to infection.

“Things are evolving so quickly it is hard to keep up,” Dexter told Healthline. “The answers I gave will likely change in a week.”

Stopping the spread of infection

Given the wide range of effects that the new coronavirus can have, many people may have contracted it without realizing it.

To effectively identify and quarantine cases of confirmed infection, Dexter told Healthline that increased testing for the virus is essential.

“People will need to be routinely screened and then isolated when they or someone in their household are diagnosed with the infection,” she said.

“Until we can test broadly, we won’t be able to get people back to work safely,” she added.

For now, Cioe-Pena emphasizes the importance of continued physical, or social, distancing.

“We can’t relax social distancing yet. We’re getting encouraging news [in New York], like new infections are down, but it’s a direct cause and effect from social distancing,” he said.

“We don’t get a medal for trying really hard in March and April and then slacking off in May,” he added.

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