Hi ebrownkirkland,
I'm sure there is some confusion for you and I will try and clear it up...hopefully
An exacerbation is old symptoms worsening and/or new symptoms lasting continuously for more than 48 hours. An exacerbation can be treated with steroids but remission can happen without the use of steroids. Not all exacerbations require steroids and not all exacerbations are helped with steroids. Usually steroids are not prescribed for sensory symptoms (tingling, buzzing/vibrations, numbness, etc.).
Now for the remission part:
When a person has Cancer they have the possibility of remission, in this case remission means there is no sign of the cancer.
Remission, in MS, can be complete (no symptoms) or partial (residual symptoms/difficulties) with partial being the most common. Remission is simply not doing as bad as when you were having the exacerbation. Three months is a bit soon to know what will remain permanently, what symptom(s) may come and go, or what symptoms are permanent. If after 2 years you still have symptom(s) that have remained then it's a very good possibility those symptoms are permanent. Even in remission MS is still an active disease.
Treating your spasms should be a combination of muscle relaxants (baclofen you are currently taking), or some other muscle relaxant, gentle stretching, exercise, physical therapy/massage therapy. I strongly recommend working with a physical therapist that also does massage therapy, it's a great combination
Many with MS are heat intolerant which can temporarily cause a worsening of symptoms. Once the person cools down the symptoms ill return to what is normal for them. There are precautions you can take: wearing a cooling vest or other cooling items, stay in air conditioned areas, getting out in the cool of the morning/evening, and staying well hydrated. Many with MS find being in a pool is helpful, both for staying cool and exercise.
Anytime your core body temperature increases it can affect symptoms, this would include --- exercise, the flu, virus, and infection.
All of the above (heat, exercise, flu, infection, and probably some I have missed) will cause a Pseudo-Exacerbation which is self-limiting. Once you rest/relax, are not sick any longer and your core body temperature has decreased your symptoms will return to what is normal for you.
It is always possible for those things to cause an actual exacerbation. I have had heat cause true exacerbations.
Just a FYI; it's possible to be cold intolerant or heat and cold intolerant. Cold intolerance and also cause a temporary increase of symptoms just like heat.