Hi,
Many-many years ago, my sister got feet injured, severe swellings, TCM can't help much, so i find alternative. I brought her to a house where an uncle are using leeches (in BM: Lintah). There are even diabetic patients letting leeches consuming wounds, sucking out dirty blood and leech saliva has healings properties too. Its a very bloody sight. 1st -used 4 leech suck, 2nd time -10, 3rd time near -20 and healed and can walk as normal.


BUT, i'm not sure if your dad suitable for such treatment, and in 2022 where to find them(i mean these Leeches practitioner after pandemic)

from google:
https://www.healthline.com/health/what-is-l...al-applications
https://www.mstar.com.my/xpose/famili/2021/...lbagai-penyakit

btw, this uncle rear his leeches in tanks, not from river(contains contaminations & bacteria), he even boast he export to SG, but i met few Sporean patient at his home those times i'm there....

goodluck~