Exacerbation Relapses suck. A lot. A relapse (aka an exacerbation or flare up) is anything that either gives you new symptoms or brings back old ones. They are different for everyone, unique in the same way snowflakes are. If snowflakes sucked. Other Terms Dysarthria The slurring of speech caused by trouble controlling muscles. Dysesthesia Caused by abnormalities in the spinal cord. Dysmetria Two left feet? Dysmetria can affect the arms too. Dysphagia Trouble swallowing food, water or saliva. View More