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    Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of and finding treatments for complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia (FM), long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

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Intracranial Hypertension (IIH) causes in ME / CFS

I have 2 questions which I am not able to find answers
1. what are possible reasons of Intracranial hypertension IIH in ME / CFS ?
2 . Do IIH increases gets worst in cold climate .
Hey, intracranial hypertension can be caused by different things: CCI, AAI, Eagle's Syndrome or vascular insufficiency. The cause of vascular insufficiency is generally a stenosis of some intracranial vein or extracranial vein like the jugular veins. Here's an article about intracranial hypertension manifesting as ME/CFS and treated with venoplasty: https://www.researchgate.net/public...rome_and_idiopathic_intracranial_hypertension.
Have a look at the research articles of Dr Higgins for more insights: https://www.researchgate.net/project/IIH-chronic-fatigue-project.

In other cases the cause it's just unknown, but a trial of a drug like Diamox can be considered as pharmaceutical intervention: https://www.iih.org.uk/treatments