After being ordered to take several weeks of complete rest, Griffin was cleared to return to full training with Bath as he recovered from the diagnosis, which is not considered a permanent condition.
“Obviously at the time I didn’t know what it was,” Griffin said.
“After the game, I underwent a number of tests to find out what had happened. I had to take a large amount of medication.
“I took two weeks off from exercising, except to walk the dog, and slowly got back into serious training.
“We’ll have to keep an eye on it. Symptom-wise, we’ll see how it goes. It’s a little bit like a concussion.”
“If I have any symptoms, I’ll report them to my physical therapist. I’m not going to lie because it’s about my heart. I can’t risk it.”
Griffin was selected by coach Warren Gatland in Wales’ 35-man autumn squad to face Fiji, Australia and South Africa.
He has joined up with the Wales squad this week, along with fellow tighthead props Keiron Assilatti and Henry Thomas, and is hoping to feature in the opening game against Fiji in Cardiff on November 10.
Griffin impressed when he started in Wales’ two Test defeats against Australia last summer and is just grateful to be playing again.
“Now it’s clearer to me that all I want to do is play rugby,” Griffin said.
“When you can’t do anything for two weeks, it shows you don’t take it for granted.”
