Conversation so far:
Was Lewis Carroll sick?
At the age of 17, he suffered a severe attack of whooping cough.
How did the whooping cough affect his life?
was probably responsible for his chronically weak chest in later life.
Did he have any other health problems?
Another defect which he carried into adulthood was what he referred to as his "hesitation", a stammer that he acquired in early childhood and which plagued him throughout his life.

Question: What were his symptoms?
Self-contained rewrite: What were Carroll 's symptoms?