In addition, some of them, mainly in their 20s and 30s, have not had a fever -- perhaps the telltale COVID symptom.
There have been multiple reports of young patients experiencing abdominal pain, according to doctors in states experiencing spikes in cases.
Abdominal pain had not been named as a symptom prior to the start of the increase in cases, mainly in states in the south and west.
Headaches, another symptom now being seen more frequently, was not on the CDC's original list of symptoms. Some new, young COVID patients have reported experiencing debilitating migraines.
“Headaches that are not necessarily well controlled with analgesic medication like acetaminophen,” Dr. Karen Landers of the Alabama Department of Public Health told WBRC-TV in Birmingham.
A preliminary study suggests that more than 80 percent of those 20 and under may show no symptoms after contracting COVID.
The study was conducted by the Bruno Kessler Foundation in Trento, Italy, in collaboration with the ATS Lombardy COVID-19 Task Force and other researchers.
COVID symptoms generally appear between two to 14 days after exposure to the virus, according to the Centers for Disease Control and Prevention (CDC).
The CDC now lists the following as symptoms for COVID:
- Fever or chills
- Cough
- Shortness of breath or difficulty breathing
- Fatigue
- Muscle or body aches
- Headache
- New loss of taste or smell
- Sore throat
- Congestion or runny nose
- Nausea or vomiting
- Diarrhea
The CDC says that if someone is showing any of these signs, they should seek emergency medical care immediately:
- Trouble breathing
- Persistent pain or pressure in the chest
- New confusion
- Inability to wake or stay awake
- Bluish lips or face
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