First of al.1 shud know al signs n symptoms.the major cause of annal fisr is constipation
.in unani system we call constpn 'ummul amraaz' that means mother of al diseases.so dont wory about cancer.it can be cured by unani herbal medicines.u have to take lots of roughage like spinach,bananas,cabbage,or any veg except brinjal n cauliflower.lots of water.avoide sitting 4 too long.do regular morning n aftemeal walk.use olive oil for cooking.n u can also lubricate anal canal
with olive oil. Drugs recommnd 4 u.Take 1.neem seeds,2.kalonji(black seeds) and 3.mustard seeds,all equal in measure.grind it dry in a mixi.take 1 tsp 3 to 4 tms a day. U can apply oint.pilex(Himalaya). In addition take 2 tabs pilex 3 times.!! Let me inform abt the result. my blog helpfromherbs.blogspot.com or follom on twitter @noorinsaba.