Could the 'mad hatters' mental condition be called a severe panic/depression disorder now?

Question

The mercury causing mental illness of yesteryear, what is it's present day diagnosing term.

Answer 1

acquired brain damage, brain injury?

nerve damage?

work related chemical exposure>

Answer 2

Hatmakers over the past three centuries used mercury in their work, and some hatters experienced nervous disorders, odd behavior, and even symptoms of madness.  

Answer 3

It's mercury poisoning.  

Answer 4

drugs

Answer 5

Present day diagnostic term is:  mercury poisoning

A lot of poisons can cause mental symptoms.  A lot of medical illnesses can, too.  They are referred by the medical condition or the type of poisoning.