new check post

Rainfall for a few hours and the flower has its friends.
I was in my clinic when I got a call from my colleague (earlier my student) asking for casual leave. Definitely something went terribly wrong. I was waiting next day to hear from her.
She wouldn't come because she developed a blue forehead and was running after dermatologists and other docs.
I asked how come.
She told she applied a diclofenac ointment on her forehead last night and suddenly next morning she got blue forehead.
The docs too got puzzled, they told they never come across a case like this before for common ointment like diclofenac. It was neither painful nor redness could be seen, no other symptoms. everything else was normal.
The doc gave some medicines, in case she develops itching redness, anaphylaxis etc she could take immediately and report, about its progress.
All the story came to an end when she went home, just to find out that she used a blue coloured cloth to cover her head and the culprit was the nothing but the blue cloth itself.