Health anxiety created by googling your symptoms, ignoring page after page of reassuring data, then reading one line saying you'll be dead in 10 days with undiagnosed cancer, on websites such as "wrong-diagnosis-dot-com" or such like.
Mike, suffered a severe attack of "worst case scenarioism" characterized by: fear of imminent death, facing difficult music choices for his funeral, and excessive will writing.
The attack came on very suddenly as a result of googling his haemorrhoid symptoms.
Adjective describing behavior as appropriate according to etiquette
Derek was too lazy to be etiquatios, so he just shouted over Denise in the zoom meeting