Charak Samhita
दशाष्टौ च क्षयाः सप्त पिडका माधुमेहिकाः। दोषाणां त्रिविधा चोक्ता गतिर्विस्तरतः शृणु ॥७॥
“There are eighteen varieties of kshaya, seven varieties of pidika (pustule/carbuncles) caused due to madhumeha and three courses (gati) of dosha. These are being described in detail henceforth”
english translation
dazASTau ca kSayAH sapta piDakA mAdhumehikAH। doSANAM trividhA coktA gatirvistarataH zRNu ॥7॥
hk transliteration by Sanscript