Covid can cause rashes. I think I read that they can last a week to ten days.
Here is from Healthline's website:
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"The exact appearance of COVID-19 rashes can vary by individual. While some infectious diseases, such as chickenpox and measles, cause a very distinctive rash, a rash due to COVID-19 can take many forms:
"Hives: COVID-19 rash can appear as itchy patches or wheals that resemble hives. These most often affect the limbs and torso.
"Macules and papules: In some cases, a COVID-19 rash can consist of itchy spots that may either be flat or raised. This type of rash often impacts the torso.
"Rash with blisters: This type of COVID-19 rash can appear with blisters that may look similar to chickenpox. It’s most often been observed on the torso and may itch.
"Lace-like pattern: Some COVID-19 rashes can have rings of skin discoloration that form a lace or net-like pattern. This kind of COVID-19 rash typically affects the legs.
"Pinpoint spots: This type of COVID-19 rash consists of dark pinpoint spots. The legs are the most commonly impacted area.
"Toe rash: Also referred to as 'COVID toes,' this type of rash causes discolored patches and swelling of one or more toes. The affected area may be painful, itchy, or have a burning sensation. Toe rashes appear to be more common in young adults."
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