"Tricyclic antidepressants can cause you to sweat less," Wheate said, "because they act as anticholinergics, which means they basically stop your sweat glands from producing sweat. We sweat to cool down, so if you're not sweating then you can't regulate your body temperature properly and you're likely to overheat."
Selective serotonin reuptake inhibitors, on the other hand, make you sweat more.
...
He suggested having a fan blow over you if you're taking tricyclic antidepressants, so that even though you're sweating less, the sweat you are producing is more effective at wicking away heat from your body.
For those on SSRIs, Wheate said that drinking lots to replace lost fluids is the best thing you can do. But, he said, "you don't want to just drink water — you need to drink something salty or slightly sugary because when you sweat you don't just lose the water, you lose salts and sugars, and you need to replace those."
Ketamine makes you sweat honeydew like an aphid 
I'd suggest reading some of the relevant studies. The side effects can be frightening but they're generally very rare. It's much more common that they'll make you poop funny or something.
Source: i'm been on all kinds of psych meds for most of my life and experienced a range of side effects from having no libido to erectile disfunction to weird poops to salivating too much to excessive belching. It sucks, but it's mostly better than the alternative.