Which type of MS is characterized by clear episodes of relapse followed by recovery?

Relapsing-Remitting Multiple Sclerosis (RRMS) is characterized by the presence of clearly defined episodes of neurologic symptoms, known as relapses, followed by periods of recovery or remission. During these relapses, individuals may experience new symptoms or a worsening of existing ones, which can last days, weeks, or even months. After each relapse, there is a partial or complete recovery, allowing individuals to return to a stable state where they may experience no progression of the disease.

This pattern distinguishes RRMS from other forms of MS. For example, Primary Progressive MS involves a gradual worsening of symptoms without distinct relapses, while Secondary Progressive MS typically follows an initial relapsing-remitting course but eventually transitions into a steady decline. Progressive-Relapsing MS, on the other hand, is characterized by a progressive course from the onset, interspersed with relapses. Therefore, the hallmark of relapsing-remitting MS is the clear, episodic nature of relapses followed by periods of recovery, making it the correct identification for the type of MS described in the question.