Which four diseases affect the whole mouth, and why is sarvasara so called?

Detailed answer

Verse 103 names one separate disease, vichari, and sarvasara arising from the three doshas. A footnote explains that sarvasara spreads to the mouth, tongue, throat, lips, gums, teeth and palate. Vichari, a pitta swelling with burning, foul smell and high fever, is later listed among the incurable diseases.