Astanga Hrudaya
वृत्तः स्यादायतो यो वा स्मृतः षोढा स विद्रधिः । दोषैः पृथक्समुदितैः शोणितेन क्षतेन च ॥ ३ ॥
Being either round or wide, this is known as Vidradhi (abscess); it is of six kinds—from each Dosha separately, from the combination of all three (sannipata), from blood (rakta), and from trauma (kshata).
english translation
vRttaH syAdAyato yo vA smRtaH SoDhA sa vidradhiH । doSaiH pRthaksamuditaiH zoNitena kSatena ca ॥ 3 ॥
hk transliteration by Sanscript