Step 1 : Introduction to the question "What chronic illness plagued Lord Horatio Nelson his entire life?"
...During his service to the British military, Lord Horatio Nelson earned an impressive reputation as a master tactician and unwavering personal bravery. His most celebrated moment came in the Battle of Trafalgar. Lord Nelson's British fleet decisively defeated Napoleon's navy, ending the threat of a French invasion of the British Isles. His service was not without personal price, however. He lost the sight in one eye during the siege of a French port and lost his right arm in a naval battle. Ironically, Lord Nelson also suffered from chronic seasickness. Source: BiographyOnline.net