Here is a link to the account of Ramana's own Fear of Death Experience
http://luthar.com/on-death-and-dying-wo ... -maharshi/
These days, you here a lot about Ramana's teachings in respect to his "Whom am I?" Self inquiry. But is this type of inquiry really what needs to be done in order to overcome irrational beliefs? Was this the inquiry he used to overcome his FOD? No, what freed him from his panic disorder was the immediate exposure to the FOD.
Fear of Death From Anxiety Attacks
Your heartbeat races. You feel sharp pains in your chest. The room appears to be spinning out of control. You don't know what's going on, but you know that something bad is happening. It feels like a heart attack, and you feel doom, as though the world is about to end.
You feel like you're about to die. Then all of the sudden nothing happens, the fear generally starts to fade away (leaving you feeling drained), and you're left wondering whether something is wrong with your health.
What you may have had was a panic attack, and the fear of death is a symptom of the attack. Here the fear of death is caused by several factors:
Fight or Flight Rush
Anxiety is a poorly performing fight or flight system, which is the system that your body activates when it's experiencing severe danger. An anxiety attack is essentially the peak of this fear. Your body rushes with an intense amount of adrenaline, and this alters your brain chemistry and thought patterns to tell you that you're in grave danger.
It's the same way you would feel if you were holding onto a ledge above a 10 story building. Your body is telling you that you need to be very afraid because your life is in danger. Unfortunately, in the case of panic attacks, your body is wrong, and the result is a feeling of death and doom despite no danger present.
Symptoms of Serious Disorders
Panic attack/anxiety attack symptoms are also very similar to other major health problems. Many panic attacks are so severe that they directly resemble heart attacks and heart failure. Thousands of people are hospitalized every year because of their panic attacks, only to find that their heart is in good health.
But during a panic attack, it's very easy to not believe that anxiety can be causing the problem. After all, the pains and sensations are all real, and many people cannot help but fear that they indicate something very serious and that if left untreated, you may be likely to die. It's a very common problem in those with anxiety, even after doctor's visits.
This is likely to contribute to a long term fear of death, as well as a fear of further panic attacks because of a concern that they're something other than anxiety.