Did the Chinese doctors whose skin turned dark / purple after coronavirus recovery experience a "Corona Discharge"?

Chinese doctors’ skin turns dark after coronavirus recovery

from wiki: https://en.wikipedia.org/wiki/Corona_discharge

Coronas can generate audible and radio-frequency noise, particularly near electric power transmission lines. Therefore, power transmission equipment is designed to minimize the formation of corona discharge.

Corona discharge is generally undesirable in:

-Electric power transmission, where it causes:

-Power loss

-Audible noise

-Electromagnetic interference

-Purple Glow

-Ozone production

-Insulation damage

-Possible distress in animals that are sensitive to ultraviolet light[6]

Electrical components such as transformers, capacitors, electric motors, and generators:

-Corona can progressively damage the insulation inside these devices, leading to equipment failure.

-Elastomer items such as O-rings can suffer ozone cracking

-Plastic film capacitors operating at mains voltage can suffer progressive loss of capacitance as corona discharges cause local vaporization of the metallization[7]

In many cases, coronas can be suppressed by corona rings, toroidal devices that serve to spread the electric field over a larger areas and decrease the field gradient below the corona threshold.