Charak Samhita
पीतं गत्वा गुदं साममाशु दोषं निरस्य च। तीव्रशूलां सपिच्छास्रां करोति परिकर्तिकाम्॥६२॥
then doshas reach guda (rectum) in sama condition and get expelled out immediately. It results in parikartika (fissure in ano) with severe pain, mucous and bloody secretions.
english translation
pItaM gatvA gudaM sAmamAzu doSaM nirasya ca। tIvrazUlAM sapicchAsrAM karoti parikartikAm॥62॥
hk transliteration by Sanscript