Nightmares in the desert

Sleep paralysis, more colourfully known as "old hag's syndrome", is a phenomenon that seems to have left traces in the folklore of just about every culture around the world; but it also seems to be commoner in some areas than others. In particular, while rare to the point of unfamiliarity in Britain or in my Algerian hometown of Dellys, it seems to be familiar to almost everybody in Tabelbala (and, similarly, within the US, it seems to be commoner among African-Americans than whites). The following Kwarandzyey text explains how it is experienced there, and as such might be of some medical interest:

ah, tsaddərts ndza askundzan ləxla aɣudzi. ndza aggwạ niš nn axnuq ka, e! asbạ uɣ bsəlləkni kʷəll, ləxla aɣudzi. nəmgwạ ɣaṛ nəmtqaqa. bəɣ sabmmə̣w niši. nəbʕəyyəṭ, nbəẓẓəgga ndza nən žžəhd... wara affu asmmə̣w niši ni ɣar nn haya si. nən kudzi, amgạ ttsən. attsən amgwạbzda ɣaṛ ndza bəssyas... nəbʕəyyəṭ, nəbẓəgga; wara affu issabmmə̣w niši. uɣu ibtsas tsaddərt. abgwạ niš adaɣ ka nn axnuq ka, amgwạ niši nən kəmbi ka ndza an tsiyu, amkạnika mʕad - ʕad nəmmiħəmda ṛəb si, həlla ʕad nəmfạktsi. xəd nəffạktsi nəmdza ufff! itsa adri.

Oh, sleep paralysis, if it gets hold of you, it's a terror. If it sits on you at your throat, he! there's no one to save you, it's a terror. You start just squawking. Nobody hears you. You're shouting, you're screaming with all your might... no one hears you, you're just on your own. Your blood runs slow. It's slow, it starts moving only slowly... You shout, you scream; no one hears you. This, they call "taddert". It sits on you here, at your throat, it sits on your hands with its feet, it hits at you until - once you praise God, only then do you wake up. When you wake up, you go "Phew!" It's gone.

Particularly if you speak Berber or Arabic, this text should pose an interesting challenge: how many words can you recognise? How much of it can you gloss?