Reference: Fataawa Ramadhaan – Volume 2, Page 451, Fatwa No.378
Fataawa al-Lajnah ad-Daa.imah lil-Buhooth al-`Ilmiyyah wal-Iftaa. – Fatwa No.10645
Question: Whilst fasting in Ramadhaan, I suffer from an intermittent excretion of semen without having a wet dream or masturbating. So does this affect my fast?
Response: If the matter is as you have mentioned, then the excretion of semen without desire during the day in Ramadhaan does not affect your fast and you are [therefore] not required to make it up.
And with Allaah lies all the success, and may Allaah send prayers and salutations upon our Prophet Muhammad (sal-Allaahu ‘alayhi wa sallam) and his family and his companions.