ABSTRACT
PPD is particularly complex in that: (a) it is often only lurking in the background and parents and work colleagues do not perceive that a patient is ill but consider them just particularly sensitive or touchy; (b) when symptoms and signs are manifold, a differential diagnosis with schizophrenia and psychoses in general is complicated; (c) drugs are almost always ineffective, and compliance is poor; (d) therapists risk being included in patients' persecutory themes (Perry et al. 1999).
