Re: difference between primary progressive and chronic progressive
According to most specialists, Chronic Progressive MS is a term which is no longer used. It used to be lumped with seondary progressive MS.
Primary progressive MS is characterized by a gradual progressive of the disease with no remittance or relapses at all- it is usually found in women in their late 30s, early 40s (although I was 39 when diagonosed with relapsing /remitting MS) and the biggest characteristic is the lesions are usually found in the spine- not the brain.
Chronic, or what is usually called secondary MS is defined as a gradual worsening of the disease after years of relapsing/ remitting MS. NOT everyone progresses to this stage, in fact with the newer Disease Modifying Drugs, the chances of progressing are lower then they used to be, although no concrete statistics are apparent at this time.
I hope this helps to clarify what you were asking? Let us know if you have additional questions.
RRMS- dx 05