(medicine, neurology) Alzheimer's disease

suffer, struggle with, be tormented by

a grandfather

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

altitude sickness

アルツハイマー病: (medicine, neurology) Alzheimer's disease

have a disease; disease / being stiff and not able to move / difficult / suffer / make one suffer

disease, illness / a bad habit