Paraskavedekatriaphobia

I suppose you all have adverted. It's another Friday at a 13th date.

The fear of Friday the 13th is called paraskavedekatriaphobia or paraskevidekatriaphobia, a specialized form of triskaidekaphobia, a phobia (fear) of the number thirteen.

-- From CrystalLinks

However, I'm not a patient with such a disease:)