Maintaining the same interval of three years between Germanicus' and Drusus' first and second term as consul, Drusus was given the consulship again in AD 21, which he held with his father. The hardship of the last two years on his father had made him reclusive. For Tiberius, Drusus holding the consulship was a welcome sight, and with the state of his health, he retreated to Campania, leaving Drusus alone in carrying out the obligations of the consulship. Tiberius' retreat lasted about twenty months.