The Compendium of Caraka 3.6.3

3.6.3

dve rogānīke bhavataḥ prabhāvabhedena-sādhyam,asādhyaṃ ca; dve rogānīke balabhedena-mṛdu,dāruṇaṃ ca; dve rogānīke adhiṣṭhānabhedena-mano 'adhiṣṭhānaṃ,śarīrādhiṣṭhānaṃ ca; dve rogānīke nimittabhedena-svadhātuvaiṣamyanimittam,āgantunimittaṃ ca; dve rogānīke āśayabhedena-āmāśayasamutthaṃ,pakvāśayasamutthaṃ ceti/

There are two hosts of diseases according to the division of prognosis: curable and incurable; two hosts of diseases according to the division of strength: mild and severe; two hosts of diseases according to the division of site: seated in the mind and seated in the body; two hosts of diseases according to the division of cause: caused by imbalance of one's own bodily constituents and caused by exogenous factors; two hosts of diseases according to the division of receptacle: arising from the stomach and arising from the intestines.