Hello
All,
I posted this on our PPN Support, Education and Advocacy Group today. I wanted to share this information once again with those who have PP or anyone who has a family member with PP. It is an important message, which I have written about several times before.
We
are a patient advocacy group as well as a support group and educational group.
It is our duty to provide information to keep each of you informed, safe and to
be the "best you can be." For that reason I am passing along this
information once again.
It
has come to our attention that someone we know with PP, who is not genetically
diagnosed, was placed on the known medications typically prescribed for PP
sometime back. This person has had no end of serious issues and complications
connected to this. So, I wanted to pass this information along once again.
Some
people do well on those medications and we are not telling anyone to stop
taking them if that is the case. However, others do not do well and/or they may
develop side effects from these drugs which can be harmful and can become
life-threatening. If that is the case, there is more information here for you
to consider. If you have been given a prescription for one of them, you may
want to read the information here before you start it, so you will know what to
expect or what to look for, in order to be safe.
Periodic
Paralysis is a mineral metabolic disorder (ion channelopathy). There are NO
drugs recommended/approved by the FDA for Periodic Paralysis. The ones
typically used, that we know about are strictly "off-label" (made and
used for other conditions).
"Q: Are there drug treatments for periodic paralysis or the myotonias (PMC)?"
"There are no FDA approved treatments for periodic paralysis or the myotonias. Any medications currently prescribed for these disorders are used "off-label". "Off-label" means the drug is approved to treat another condition/disease, but was not scrutinized under the quality control protection of the FDA's clinical trials process for treatment of myotonias or periodic paralysis".....
This is the complete blog:
http://livingwithperiodicparalysis.blogspot.com/2014/06/beware-of-off-label-drugs.htmlhttp://rarediseasesnetwork.epi.usf.edu/.../learn.../faqs.htm :
"Q:
Are there drug treatments for periodic paralysis or the myotonias (PMC)?"
"There
are no FDA approved treatments for periodic paralysis or the myotonias. Any
medications currently prescribed for these disorders are used
"off-label". "Off-label" means the drug is approved to
treat another condition/disease, but was not scrutinized under the quality
control protection of the FDA's clinical trials process for treatment of
myotonias or periodic paralysis....."
While
researching this I found out some interesting information about some forms of
Hypokalemic Periodic Paralysis and the use of those drugs. Some forms do not
respond to them and some cause paralysis and/or worse symptoms:
A study from 2001 relates two different types
in particular but I am sure more have been discovered by now:
CACNL1A3=Hypokalemic Periodic Paralysis-1 and SCN4A=Hypokalemic Periodic
Paralysis-2, each with several mutations...and of course there are the ones
that have not been found yet.
When
someone is diagnosed with Hypokalemic Periodic Paralysis, clinically, (based on
their symptoms), one must be very careful. One form either does not respond to
diamox (acetazolamide), causes more paralysis or causes serious symptoms. So,
diamox should not automatically be given to people clinically diagnosed with
Hypokalemic Periodic Paralysis or if it is, it should be used with extreme
caution.
From
the article:
“In conclusion the present study demonstrates
that genetic characterization of HypoPP patients is important to decipher the
clinical and histopathological features of the disease, and to predict the
response to therapy. We suggest that mutations in the SCN4A gene should be
systematically sought in HypoPP patients suffering from paralytic attacks
followed by myalgias or worsened by acetazolamide, and when muscle biopsies
reveal the presence of tubular aggregates.”
About
half of us do not have a genetic diagnosis and do do know what form of PP we
actually have. If we are going to take these medications, we must be very
careful and closely monitor our symptoms and the side effects.
For
more information about this subject you may want to read in our files:
"Why
we discourage discussion of diamox and acetazolamide.dot · version 1"
"Cautionary
Information about Acetazolamide and Diamox for Individuals With PP.dot ·
version 1"
"Information
on diamox.dot · version 1"
Or
on the blog:
Again, we are not trying to tell anyone to stop taking any
medications. If they are working and there are no side effects, then there are
no problems. If, however, these meds may be causing side effects or if you are
trying to decide whether to take them or not, hopefully this information can
help you to make an informed decision.
Hugs
to you all...