Forstarters a month of solitary confinement isnot short term. Short term solitary confinement is probably around 3-5 days.Negative effects are apparent after 10days in all studies and get worse as it goes on.
Resultsof tests using volunteers vary. People who are told how long they’re likely tobe in solitary appear able to endure it with fewer negative effects. A 1964study (Zukerman) showed two thirds of volunteers were willing to stay isolated for3-14 days. However another study in 1959(Smith and Lewty) using a silent roomgave an average stay of 29 hours for men and 48 hours for women. The longest time was 4 days.
I’llsummarise the main points.
Heartpalpitations (over 50%)
Difficultyconcentrating and thinking
Suicidalinclinations/actions
Thepercentages are all from one study the Shalev quotes but it’s worth mentioningthat other studies in his report quoted hallucinations in 100% of cases studied.
Theeffects aren’t in any particular order and your character wouldn’t necessarilysuffer all of them. In a prison context self harm, irrational anger andincreased violence all seem to be quite common.
Shalev’ssourcebook is peppered with accounts from prisoners and I personally found itreally helpful for my writing. Thiscampaign group also has some personal accounts, which might be helpful.
As forhow he’d respond to rescue-
In amonth it’s unlikely he’d be suffering from the most extreme effects. Heprobably wouldn’t be catatonic, attack the rescuer or completely unable to tellfantasy from reality.
Some ofhis response is also going to depend on which symptoms you think he should show.The last time I wrote solitary confinement I used a mixture of symptoms thatworked with the narrative and those that were most common. I made a point ofstressing some of the physical effects since they’re less well known.
He’dalmost certainly be dazed and confused. The sudden rush of sensory input mightmake his headaches worse and give him vertigo, the same way it would with anormal migraine. He’s also likely to be nervous, skittish and jumpy.
Theredoesn’t seem to be a clear consensus on which (if any) symptoms persist and howlong in solitary it takes for that to start being a major risk. I’d suggestthat it would be unusual for him to have the most extreme symptoms persistingafter, say, a month’s recovery. But he might well still be depressed, anxiousand have nightmares.
I think areasonable response would be for him to follow his rescuers lead at first. Hemight be too out of it to think of anything else to do and he might also thinkit’s a hallucination or fantasy. In that case later he’d have questions for his rescuer.
He’d needsome time to recover, which in this case generally seems to mean a few quietdays getting used to being in the world again. Being able to make his owndecisions about his life is probably going to be incredibly important to him.
Hopefullythat’s given you an idea of the sort of condition he’ll be in and what he’sbeen through. Let me know if you’ve got any further questions. :)