Hyperthyroidism (Yang) and hypothyroidism (Yin) are often manifestations of our incapacity to express or do what we desire. No one understands us; we lack the tools to make sense of our thoughts; we are scared that what we say will
not be accepted by others; and we are terrified of the power or violence of what we may say. Behind this reserve, there is always a sense of risk, of danger, which prevents us from expressing ourselves.

The Yang variety (hyperthyroidism) is motivated by a desire for vengeance. This person is always on the go. The inner fire swallows him, and the conflict continues indefinitely. People suffering with hyperthyroidism seem to be engulfed by this inner fire. The fire and the battle, on the other hand, devour without generating since the sole output is reactive and defensive, but not constructive. In other words, we are doing more and more but not becoming better.

The Yin form (hypothyroidism) represents surrender in the face of the inability of self-expression. The inner flame dies. The vital dynamics that were discovered to be excessive in hyperthyroidism are now inadequate. Because the body no longer burns, it stores. Its loudness rises to compensate for the lack of expressiveness. Nodules appear often to signify emotions, wants, lusts, or buried frustrations, and their presence offers further information about their hidden significance.