all kinds of diisease

[azz]

a. He thinks he has every kind of disease. One day he thinks he has lung cancer. The next day he thinks he has stomach cancer. And then he thinks he thinks he has liver problems. It never ends.

b. He thinks he has all kinds of disease. One day he thinks he has lung cancer. The next day he thinks he has stomach cancer. And then he thinks he thinks he has liver problems. It never ends.

c. Every kind of disease there is, he thinks he has. One day he thinks he has lung cancer. The next day he thinks he has stomach cancer. And then he thinks he thinks he has liver problems. It never ends.

Which of the above are grammatically correct and are meaningful?

The issue for me is that he never thinks that he has all kinds of disease at the same time. There is no point in time where he says: 'I have all the diseases there are.' Every time it is a different disease. But he goes through them all in the long run. That is why I am not sure that the sentences work.

Many thanks.