I 33M Got diagnosed with a progressive illness and i don’t want to drag my 5 month gf 22F into it

M33 with my gf F22. We started dating around 5 or 6 months. About one month in i start becoming dizzy constantly and other symptoms that led to a recent early onset Parkingsons diagnose. Im still trying to grapple with that.

About her. I love so much she is such a nice girl that’s why I’ve been thinking of braking up. I dont want to drag her into this he’ll that’s coming up knowing I’ll end up crippled in a couple of years and knowing ill end up leaving her alone with kids. I haven’t t told her yet but im pretty sure she’ll want to stick around. But she has a full life ahead and dont want her to just take care of me. My life expectancy and quality is very uncertain at this point.

How can i explain this to her without braking her heart??