What does this trail of red pixels around the front camera mean ? Should I be concerned ?

I don't remember what caused it, one day I noticed this trail of red pixels around the front camera of my phone, and it seems the trail is extending downwards everyday but I could he wrong because I just noticed it yesterday. Should I be concerned ? Does this mean there could be something severely bad inside ?

I don't remember what caused it, one day I noticed this trail of red pixels around the front camera of my phone, and it seems the trail is extending downwards everyday but I could he wrong because I just noticed it yesterday. Should I be concerned ? Does this mean there could be something severely bad inside ?