Signs of vidarika, vidradhika, alaji and vinata

Vidarika is hard and round like the vidari tuber and painful; vidradhi, painful and arising from all the doshas, is of five kinds but is described here as two, savarnaka and shighravidahi; alaji burns the skin, is covered with blisters, dark and very red, and causes thirst, confusion and burning; vinata arises on the back, abdomen or a similar place and is large, pricking, painful, thickly discharging and bluish. All these boils arise from the three doshas and show their signs.