Coronavirus symptoms: What’s that on your skin? Could it be a sign of COVID-19?

The CDC outline very dangerous side effects of the virus – all of which need immediate medical attention.
For example, any “trouble breathing”, “persistent pain or pressure in the chest”, or “new confusion or inability to arouse” requires somebody to dial 999.
Additionally, “bluish lips or face” warrants a 999 call.
For now, a skin rash isn’t an indicator for COVID-19, but just incase it does become official, what even is a rash?
Source: Daily Express