Efficacy and Safety of Modified Yupingfeng Nasal Spray in Controlling the Recurrence of Persistent and Moderate-Severe Allergic Rhinitis: Study Protocol for a Multicenter, Open-Label, Randomized, and Parallel-Arm Trial

Table 1

Syndrome differentiation criteria of QDBS.

	Qi deficiency	Blood stasis
Primary symptoms	Shortness of breath; mental fatigue; and feeble pulse	Obstruction of collaterals manifestations (purplish lips, gingiva, and nails); purplish tongue or tongue with ecchymosis; varicose veins under the tongue; and unsmooth pulse/deep and wiry pulse/slow and wiry pulse.
Secondary symptoms	Spontaneous sweating; unwillingness to speak; and pale tongue	Scaly skin; hypoesthesia; depressive; amnesia; and paresthesia.

Note. Diagnosis of each syndrome element should include two primary symptoms or one primary symptom and two secondary symptoms, simultaneously. The diagnosis of QDBS requires meeting both diagnoses of “Qi deficiency” and “blood stasis,” simultaneously.