Describe Lanyon in the before and after?

Before:

This was a hearty, healthy, dapper, red-faced gentleman, with a shock of hair prematurely white, and a boisterous and decided manner.

After:

There at least he was not denied admittance; but when he came in, he was shocked at the change which had taken place in the doctor’s appearance. He had his death-warrant written legibly upon his face. The rosy man had grown pale; his flesh had fallen away; he was visibly balder and older; and yet it was not so much these tokens of a swift physical decay that arrested the lawyer’s notice, as a look in the eye and quality of manner that seemed to testify to some deep-seated terror of the mind.