Dukkha

Suffering, dissatisfaction, existential unease. One of the central concepts of Buddhist teaching and the First Noble Truth: dukkha ariya sacca.

The term extends beyond obvious pain. Three layers:

• Dukkha-dukkha — Direct physical and emotional suffering: illness, loss, pain
• Vipariṇāma-dukkha — Suffering from change: what is pleasant is impermanent, its ending generates suffering
• Saṅkhāra-dukkha — Conditioned dissatisfaction: the subtle unease of existing in a world where nothing satisfies permanently

The etymological root points to a faulty axle (duḥ = bad, kha = axle hole). The wheel wobbles, vibrates, lacks smoothness. Thus dukkha is the quality of an experience that doesn’t quite fit, that always has an edge of incompleteness.

In Patañjali’s yoga, duḥkha appears as a consequence of pariṇāma (change), tāpa (heating), and saṃskāra (latent impressions) — YS 2.15. Both traditions agree: suffering comes not from outside, but from identification with the impermanent.