Well, I've been stung 3 times by scorpions whilst living out here. The first time I was hospitalised and the other 2 times it wasn't quite so bad. On the first occasion I went to the Esnaf clinic in Hisaronu, they give me a tetanus and adrenaline jab and phoned the Esnaf in town to tell them I was on the way. On arrival at the Esnaf Hospital I was met by a Doctor and 4 nurses who took me straight in to the Emergency Room where I was given an anti-venom shot, more adrenaline and was put on a drip. It was at this point that I went into shock and passed-out for a few minutes. Once I'd stabilised I was taken to a ward and was put on 15 minute obs and also had a couple of visits from the doctor. After 4 hours I felt much better and was released from the hospital after paying my bill of 80 YTL.
I was told later by our village doctor that whilst scorpion stings are excruciatingly painful, it's unlikely to kill you unless you are a child, infirm or have a heart condition. In all honesty I think that going into shock was probably caused by shear terror of the unknown, rather than the effect of the venom. Even now, 4 years later, I sometimes get a tingling sensation around the area of the sting and have been told that it's due to nerve damage.
In each case the pain lasted for about 18 hours.
Scorpions are not particularly common but I suppose over the 5 and half years we've been out here I've seen 30 ish. But you have to bear in mind that we live in the countryside and to see a scorpion in a developed area is far less likely I should think.