Need to cure it first. Need to relax the spincter and relieve constipation
. Try stool softners like lactitol fibres and sit in tub of luke warm water for 20mins twice a day. It will take over a month to heal fully. But you shud see changes within 2 weeks. More serious fissures will need more medications. Please get a private consultation. To prevent fissures in future prevent having constipation. Include high amt of dietary fibres in your diet
. Lead a stressfree lifestyle.