“My friend has got ALS but he’s the happiest guy on earth!”
That’s what I’ve heard from a student of mine. Amyotrophic lateral sclerosis (ALS), is a specific disease (=illness) which causes the death of neurons controlling voluntary muscles. It’s a degenerative disease.
So it came up the need to learn how to talk about illnesses.
Find below two good videos to introduce you to this matter. Listen carefully and make notes of what you hear.