1 definition by Dr I. H. Work

Post Holiday Depression (PHD) : General feeling of sadness and depression and hatred of all things work-related soon after a long holiday. Symptoms usually show at least 4 hours into the first work day after a holiday and can linger for up to a year until the next festive season.

No known deaths have have recorded due to PHD, but severe cases of office in-fighting, bickering, and crying have been noted in the IT industry soon after New Years.
Sue came back from the Cape Town with a severe case of Post Holiday Depression and refuses to send those invoices!
by Dr I. H. Work January 26, 2010
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