This webpage will give you a specific definition of a relapse and this may help:- http://www.mssociety.org.uk/what-is-ms/types-of-ms/relapsing-remitting-rrms Tremors and dysaesthesia ( http://www.mstrust.org.uk/atoz/dysaesthesia.jsp ) are annoying symptoms of MS. And, as you have found out, can interrupt your normal sleep, which will leave you tired. There are medications available that will dull down this kind of neuropathic pain. See if you can have a word with your MS Nurse to discuss these issues.

Oh goodness @Brit00 ! I recall being at second episode stage, I'd had small extra events in between, which didn't tick the "MS" boxes. They were more irritating than the official second event. @Stumbler is the guru! For me I would say I have attacks (new stuff) and relapses (uprisings of past attack symptoms). But often things aren't black and white, each day I can feel the layers of past attack symptoms, to a greater or lesser degree. Good days might feel like remittance, where symptoms are hardly noticeable, but can be punctuated by bad days which feel like relapses. A full on relapse lasts and lasts and might also begin with a new symptom attack. Other times not. I've learned to pay attention to how I feel and be proactive about anything odd, and proactivity might be to stop thinking about it altogether, do something I know works, and/or pick up the phone to my GP or MS nurse team. Its horrible, but having access to support is important so as to keep calm and reduce anxiety and uncertainty.