I can only speak for my SCS - as I'm not familiar with the controllers for the other manufacturers stims, but mine - ANS/St Jude - is very simple. As far as what you need for day to day use- it has 'minus' and 'plus' buttons on the top for adjusting the intensity, and six buttons on the front - 'on', 'clear', 'left' & 'right' 'accept' and 'balance mode'. Except selecting a mode or program number, I do everything without looking at the controller - and this would be something you could easily learn to do as it makes a beeping sound each time the mode or program is changed. You don't need to be able to see the the controller screen to manage the intensity or balance, because you select based on what you are feeling.
If you have any questions at all, please feel free to ask. I'm coming up six years with my SCS and although I have had a lot of problems with it I wouldn't not have it.
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Full body CRPS with spasms, dystonia & contractures, gastroparesis, orthostatic hypotension,bradycardia/tachycardia, bursitis, CTS, osteoporosis, multiple compression fx, disc bulges.
Oxycodone ER/IR, Topamax, Mobic, Somac, Cipramil, Midodrine, Vit D & C, SCS, baclofen/bupivacaine pump