I agree with you, depression alters the immune system and the immune system can cause depression. But it is through the immune system that we feel the effect.

I agree with you, depression alters the immune system and the immune system can cause depression. But it is through the immune system that we feel the effect. "momentary disruption isn't considered a disorder" By definition it is. Duration is irrelevant. My panic attacks can last for only 2 minutes.