Acute vs chronic. New symptoms (acute) imply a new attack on the nervous system by the disease. These usually improve with time but the patient will often not fully recover. Chronic symptoms are due to structural damage that will not improve over time.
Possible diagnosis? Symptoms associated with ms are, potentially associated with many possible other disorders, and need to be diagnostically confirmed. Symptoms often seen include fatigue, weakness, imbalance, loss of vision, worsening of symptoms with heat exposure. However, a doctor must decide if these symptoms are caused by ms or an alternative etiology, and then confirm a diagnosis and start appropriate rx.