Yeah, that is fairly standard. You are using muscles in a way you haven't really used them much before, especially with the grip. Keep practicing and it would get easier.

One thing I suggest to clients, if they still watch TV, is get used to scanning with the cane while watching TV. It gives you time to build up the muscles, but you don't need to focus on the traveling or safety aspects.

Yes, that also happened to me. Remember that technique will help a lot with this. May I ask what all you've done with it so far?

Kinda hard to tell without more info. How are you holding your cane? What material is it? What muscles are you using to do the sweeping action? Constant contact or two-tap?

A few suggestions:

1. For training purposes: try keeping your wrist locked to your hip (at the level it hangs naturally), arm totally relaxed, wrist not moving much. Move the cane using the motion of your hip when walking. This is just a component of realistic full time use, but hip muscles are way stronger & durable than your hand.
2. If doing two-tap, you might be arcing higher than necessary. It can be quite shallow, and that requires less power.
3. Try "choking up" on the cane - e.g. having a bit of the grip against your wrist. That shortens it (making for less leverage required), but also connects it more with your arm & body and makes you less tempted to do it all with your wrist.
4. Do you have your index finger extended on the flat side of the grip?
5. If you're doing constant contact and need more force (e.g. to hear detail of different pavement types), again try choking up and having more palm contact. Or if you don't need that detail, relax and let it just slide more. (And get a rolling tip.)
6. If you're trying to generate an echolocation ping, try using a more whip-like motion, fairly loose hand. Like a drumstick, not like a baseball bat.

Really though if you're literally just getting started, I think you're probably juggling too much mentally to be able to think about the ergonomics, and you're just going to have to deal with it for a little while.

Once you're past the stage where things like foot synchronization are automatic, it'll be a lot easier to focus on what muscles you're using to power the swing, whether you're gripping too hard or light, etc. And as others have noted, your muscles will have gotten stronger anyway.

If it's still hurting after the first month or so, and you have the basics like foot synch automated, work on it like an ergonomics problem — and try out a lighter cane or a rolling tip.

For daily use, it should really not hurt at all. It'd really suck to be blind with RSI. ;-)

I still need to learn to use a cane myself so I might not understand well enough but if it's anything like lifting weights. A thicker grip might aleviate the pain.
The cane I have is too long and the grip is about as thick as a drumstick. Really not fun to hold.

My hands/wrists are usually stiff or sore regardless of what I'm doing so not looking forward to this.