Many Pdocs now believe BP is on a spectrum, from unipolar on one side to BP I on the other. In that case it hasn't really skipped, everyone is just at a different point along the line. I couldn't say because I'm not an expert.
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Nammu
…Beyond a wholesome discipline, be gentle with yourself. You are a child of the universe no less than the trees and the stars; you have a right to be here. …...
Desiderata Max Ehrmann
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