Key symptoms of Coronavirus
Ordinary SARS, influenza, COVID-19: distinguish one from the other is not an easy task, especially in the season of colds and viral diseases. These are the main symptoms of coronavirus infection in order of manifestation.
Scientists from the University of Southern California managed to gather all known information about coronavirus and find out step by step how the disease manifests itself.
To predict the order of symptoms, the researchers analyzed the incidence rates of 55,000 people in China. The data were provided by the World Health Organization (WHO). It turned out that the signs of the disease appear most often in a certain order.
American and British sources give figures of 37.8 and higher . According to their estimates, these numbers are most often displayed on the thermometers of patients with coronavirus. Indicators in other countries are slightly different. Russians say that 90% of patients with COVID-19 have fever and a temperature of 37.5.
One study showed that in seasonal influenza, this symptom, along with sore throat, occurs before or simultaneously with fever. COVID-19 irritates lung tissue and, as a result, the cough becomes dry and persistent. As the disease progresses, the lung tissue fills with fluid. In this regard, the patient may become even more short of breath as the body struggles to get enough oxygen .
It is not the most common symptom. According to data from China, in the initial phase, it is detected in an average of 11% of patients and more frequently in children. U.S. data in some cases reached up to 26%. The causes of nausea in COVID-19 are not fully identified. In some patients, this may be due to the virus itself, which can attack not only the lungs, but also the gastrointestinal system. The symptom appears at the onset of the disease, but may also persist for some time after recovery .
An important point: if the patient feels nausea after the diagnosis, it may be associated with an increased sense of anxiety and stress. Another reason is the side effect of drugs after starting therapy .
According to a study published in the American Journal of Gastroenterology, diarrhea also often manifests itself in the initial stages of the disease. Studying the indicators of 206 patients with coronavirus, doctors found that 48 experienced discomfort only in the area of the gastrointestinal tract, while 69 felt problems also in the throat.
The disease can manifest itself in different ways. About half of the cases of COVID-19 have the following symptoms: shortness of breath, fatigue, loss of taste, and various pain sensations.
Most often, it occurs from the 4th to the 10th day. At risk: patients 65+, smokers, those who suffer from diabetes, chronic lung disease, cardiovascular diseases, and people with a weakened immune system. As with nausea, shortness of breath can be a reaction to stress, anxiety, and also accompany the onset of panic attacks .
This symptom indicates that the body has devoted all its resources to fighting the virus. And although a person may not feel it, the body sends a signal that the fight is quite tiring for him. Often, fatigue is accompanied by other signs of the disease, such as muscle pain or unpleasant sensations in the throat. It often happens that this symptom of the disease goes away one of the last .
Loss of taste and/or smell
The nature of this symptom differs from similar manifestations during the flu or SARS, since COVID-19 usually passes without a runny nose or nasal congestion. According to one theory, the virus affects the nerve endings associated with these feelings, but scientists have not yet found the final cause. On average, the lack of taste and smell in patients with coronavirus lasts for eight days .
A variety of pain
In some ways, these feelings resemble fatigue after the gym. Rather, you feel an ache in the whole body, rather than in any particular part of it. This symptom is a characteristic feature of many viruses, as they tend to damage muscle fibers. Severe, sharp headaches are also considered the first sign of coronavirus. There are suggestions that they accompany patients who have problems with the gastrointestinal tract during their illness .
Among the rare symptoms that occur no more than 15% of cases, there are:
Red inflamed eyes can be the result of the virus entering the body through the conjunctiva covering the white and inner part of the eyelids. It makes sense to worry if conjunctivitis appears along with other signs of the disease .
There are several types of rashes that can accompany COVID-19. The main ones are: hives, rashes like chickenpox.
Urticaria. Quite quickly, within a few hours, bumps appear on the skin, usually accompanied by itching. The rash can affect any part of the body. Skin problems can occur both at an early stage of the disease and throughout the disease.
Rash of the type of chickenpox. These are small red itchy pimples that can appear on any part of the body, but especially on the elbows and knees, as well as on the back of the hands and feet. Such rashes can persist for several days or even weeks.
WHO warns that if you have these symptoms or if you have been in contact with a person with confirmed COVID-19, you should get tested for COVID-19.