What does not typically occur in RRMS?

In Relapsing-Remitting Multiple Sclerosis (RRMS), the hallmark characteristics include episodes of neurological dysfunction (relapses) followed by periods of recovery (remissions) where symptoms improve or stabilize. The correct choice reflects that continuous progression of symptoms is not typical in RRMS.

In this type of MS, individuals typically experience distinct flare-ups of symptoms that may vary in duration and severity, but they do not face a steadily worsening course of the disease without recovery phases. Instead, patients often regain some or all of their previous function during the remission periods.

Additionally, acute worsening of function and intermittent remissions are consistent with RRMS, where a person can have symptoms that exacerbate suddenly and then improve during the remission phase. Periods of recovery are integral to this type, highlighting the cyclical nature of the condition. Therefore, the choice identifying continuous symptom progression aligns with the typical behavior of RRMS, differentiating it from other forms of multiple sclerosis, such as Primary Progressive MS (PPMS), where symptoms generally worsen over time without distinct relapses and remissions.