What must a masturbation addict do after engaging in it during Ramadan?

Masturbation is forbidden. If a fasting person engages in it during a Ramadan day and semen is discharged, their fast is broken, and they are required to make up for that day (qada'), without needing to offer expiation (kaffarah), according to the most authoritative opinion. However, if no semen is discharged, there is no need for qada'. Committing sins in Ramadan carries a greater burden of sin.