Table 2.
Autoimmune workup, including anti-N-methyl D-aspartate (NMDA) receptor antibodies, anti-Ro antibodies, anti-La antibodies, antineutrophil cytoplasmic antibodies (ANCA) antibodies, and anti-Hu antibodies, were negative. These investigations were carried out to rule out the most common and important causes of encephalitis and it came back negative. As patient was having URTI features as well so a chest X-ray was done which showed bilateral opacities more on the left side. A nasal swab COVID-19 Polymerase Chain Reaction (PCR) was ordered and it came back positive. Patient was suspected of having COVID-19 encephalitis so a CSF COVID-19 Polymerase Chain Reaction (PCR) was ordered and it came back positive. MRI brain was also carried out which is given in