Thanks for the replies!
I’ve done a bit of research…and included it here…interesting. I think at my next doctors appointment I’ll discuss this as all this time I’ve assumed it’s “just a side effect” and it very well still may be…but I think it’s worth exploring a little further, just to safe.
I guess one shouldn’t just blame everything on the med (s) or TN just in case it’s non-related. We shall see…
(( hugs )) Mimi
Spasmodic dysphonia is thought to be caused by abnormal functioning in an area of the brain called the basal ganglia. The basal ganglia consist of several clusters of nerve cells deep inside the brain. They help coordinate movements of the muscles throughout the body. Recent research has found abnormalities in other regions of the brain, including the brainstem, the stalk-like part of the brain that connects to the spinal cord.
The crucial nerves that carry the brain’s signals to the muscles of phonation are the laryngeal nerves, which are themselves branches of the 10th cranial nerve – the ‘vagus’ nerve. As with the other cranial nerves, (which all exist in pairs) the vagus arises directly from the brain, rather than from the spinal cord, and travels through a specific opening in the skull to reach its location.
Read more: http://www.netdoctor.co.uk/diseases/facts/dysphonia.htm#ixzz30TlXv2dz
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What drugs can cause dystonia?
Certain drugs have been implicated in causing dystonia and this can be in an acute form or more long term known as tardive dystonia. This form of dystonia is referred to as secondary or drug induced dystonia.
Some drugs may not cause dystonia but may aggravate the pre-existing disorder. Patients should avoid these drugs.
The list of drugs causing drug induced dystonic reactions is long but includes the following.
Antidepressants (amitriptyline, Amoxapine (Asendis), bupropion, clomipramine (eg Anafranil), doxepin (eg Sinequan), fluoxetine (eg Prozac), imipramine, nortriptyline (Allegron), trimipramine (Surmontil) and trazodone (eg Molipaxin)).
Anti-anxiety agents (alprazolam (Xanax), buspirone (eg Buspar)).
Anti-nausea/vomiting agents (metoclopramide (eg Maxolon), prochlorperazine (eg Stemetil)).
Neuroleptics (chlorpromazine (eg Largactil), clozapine (eg Clozaril), fluphenazine (eg Moditen), haloperidol (eg Haldol), perphenazine (Fentazin), promazine, trifluoperazine (eg Stelazine)). The dystonia associated with neuroleptics is often called tardive dystonia.
Other drugs include the psychiatric drug lithium (eg Priadel), midazolam used in anaesthetics, phenytoin (eg Epanutin) an anticonvulsant, promethazine (eg Phenergan) an anti-allergy drug and verapamil (eg Univer) an antihypertensive.
In general, alcohol does not have an adverse effect on dystonia but it is rarely seen to hasten it.
Alcohol may also help dystonia, particularly forms of myoclonic dystonia. People who chronically abuse alcohol can get a series of involuntary movements or tremors not related to dystonia. Excess alcohol intake is not advised.