"Brain scans appeared normal, suggesting the cause was psychological rather than neurological."
The proper functioning of the brain is contingent on far more than its macroscopic structure.
Calling this disorder "psychological" will just lead to its sufferers dismissed as crazy. Anxiety causes deja-vu? Obviously if that was the case it would be much more prevalent. Anxiety is normal, deja-vu isn't.
Society still has a long way to go when it comes to blaming people for psychology but not physiology. In truth there is no difference; everything the brain does is physical at its roots. Even if you suppose a particular psychological phenomenon is purely emergent from self-reinforcing electrical patterns (a "feedback loop") in an otherwise unmodified brain, those patterns still exist in a physical form. Whether a psychological problem is caused by bad signals or bad substrate should be irrelevant to the notions of blame or stigma.
The proper functioning of the brain is contingent on far more than its macroscopic structure.
Calling this disorder "psychological" will just lead to its sufferers dismissed as crazy. Anxiety causes deja-vu? Obviously if that was the case it would be much more prevalent. Anxiety is normal, deja-vu isn't.