A condition where a person gets better and the then falls sick again,usually because he/she stopped taking medication

The condition you are describing is known as a relapse or recurrence. A relapse occurs when a person's symptoms improve while receiving treatment, but then they experience a recurrence of the illness after stopping or reducing their medication. This can happen in various medical conditions, such as mental illnesses, chronic diseases, or infections. It is essential to follow healthcare professionals' advice regarding the duration and dosage of medication to minimize the risk of relapse.