Chart 1.

Dysphagia classification scale¹¹.

Dysphagia degree classification		Characteristics
D0	Normal swallowing	Without stasis or food consistency restriction.
D1	Mild dysphagia	With mild stasis, without food consistency restriction.
D2	Moderate dysphagia	With mild/moderate stasis, there can be restrictions of up to two consistencies.
D3	Severe dysphagia	Moderate to severe stasis, with the restriction of more than one food consistencies.