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 Lewis Carroll's life?
was probably responsible for his chronically weak chest in later life
Did Lewis Carroll have any other health problems besdies a chronically weak chest, and whooping cough?
In his diary for 1880, Dodgson recorded experiencing his first episode of migraine with aura

Question: What were his symptoms?
Self-contained rewrite: What were Lewis Carroll's migraine with auro symptoms?