If we were to reimagine this image as being a planet, we would say that the Persona is the equivalent of the atmosphere and the molten core is the equivalent of the Self. In between the crust and the core are the layers of the Ego, the (personal/collective) Shadow and the Anima/Animus.

With this model in mind, we can see that "bipolar" experiences do not penetrate as deeply into the psyche. Rather, they're still clustered quite close to the surface and ego identification is still very much present as caught up in notions of deflation (I'm worthless, I'm no good, I can't do anything right, I don't deserve to live, everyone hates me, I feel terrible, etc.) or inflation (I'm beautiful, I'm talented, I have so many good ideas, everyone loves me, I feel fantastic!).

We might also be able to see that the polarization that is taking place is largely between the Persona (that which we perceive to be good about ourselves) and the Shadow (that which we perceive to be bad about ourselves). It is the Ego's task to try and balance these two opposing viewpoints and most of us are aware of having experienced these states of not feeling good about ourselves or of feeling good about ourselves. We can come up with some more pencil sketches, like this...

Deflation <----------> Ego <----------> Inflation

Shadow <----------> Ego <----------> Persona

Inwards <----------> Ego <----------> Outwards

Reduced Energy <----------> Ego <----------> Abundant Energy

In a manner of speaking, we could say that bipolar disorder is a dysregulation of the Ego. I suspect that fragmentation can take place at the far end of either spectrum. Like this...

Fragmentation <----- Deflation <----------> Ego <----------> Inflation ------> Fragmentation

It is fragmentation of the Ego that takes one deeper into the psyche and it's here that we're going to start seeing some of those archetypal elements. Some of the symbolism that emerges for an individual who has fragmented is often related to severe injury to the body or apocalyptic themes. I suspect that the next stage after fragmentation is annihilation; fragmentation signifies the collapse of the ego, annihilation signifies the death of the ego.

Based on what you have shared of your son's experiences, I'm not seeing a lot of evidence of fragmentation. It may be there and you've simply not shared those details or are not aware of them yourself. I suggest you take Perry's book and pass it to your son. Ask him to skim through it. If he has experienced fragmentation, he's going to recognize the themes and come out of his room with the book in his hand and an expression on his face that says, "Paydirt!" That will tell you that you need to explore Jungian and possibly, spiritual approaches in a greater depth.

However, if this is not the case, then I would suggest you focus your attention closer to the surface.