It is very rare to go through life with MS as your only medical problem. Often new or worsening symptoms are either directly or indirectly related to another condition. For instance, if you experience a urinary tract infection that you are not aware of (not an uncommon event), many of your usual MS symptoms can worsen until the infection is treated. Other symptoms, such as fatigue and forgetfulness, can be totally unrelated or indirectly related to MS; in fact depression and sleep disruption are two of the most common causes of these symptoms.
Lastly, even if new symptoms are emerging or worsening directly as a result of your MS, it doesn't mean the MS is getting worse. Some symptoms seem to emerge more commonly during the recovery phase of relapses and would indicate attempts at regeneration or scaring.
This is why you need the help of an experienced MS specialist to sort out these issues and help you find the appropriate treatment. These are complex issues and even a skilled MS specialist will often find it difficult to determine at first to determine if your worsening symptoms are directly attributable to your MS. However, the cause usually becomes apparent over time. I hope this information helps.
PLEASE NOTE: This information/opinions on this site should be used as an information source only. This information does not create any patient-HCP relationship, and should not be used as a substitute for professional diagnosis and treatment. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition.