Conversation so far:
When did Benjamin Henry Latrobe return to england?
Benjamin Henry Latrobe returned to England in 1784, and was apprenticed to John Smeaton, an engineer known for designing Eddystone Lighthouse.
Are there any other interesting aspects about England the Benjamin Henry Latrobe article?
In February 1790, Benjamin Henry Latrobe married Lydia Sellon, and they lived a busy social life in London.
Did Benjamin Henry Latrobe have a family in England?
Benjamin Henry Latrobe and Lydia Sellon had a daughter (Lydia Sellon Latrobe) and a son (Henry Sellon Boneval Latrobe).
Did Lydia Sellon Latrobe and Benjamin Henry Latrobe divorce?
Benjamin Henry Latrobe's wife Lydia Sellon died during the birth of their third child in 1793.
Did the third child live when Benjamin Henry Latrobe's wife Lydia Sellon Latrobe died during its birth in 1793
What else happened to Benjamin Henry Latrobe in England besides his return, marriage and death of wife Lydia Selton?
In 1795, Benjamin Henry Latrobe suffered a breakdown and decided to emigrate to America, departing on November 25 aboard the Eliza.

Question: What caused the break down?
Self-contained rewrite: What caused the break down of Benjamin Henry Latrobe in England?