Tenacity
Member
- Joined
- Mar 12, 2016
- Messages
- 844
I decided rather than updating the numerous threads I've already made on the subject, each presuming a different reason for my problems, that I'd make this log and share my findings here.
Previous threads:
Is This Hyperthyroidism?
The Past Five Months Have Been Hell (Subacute Lymphocytic Thyroiditis?)
Postural Orthostatic Tachycardia Syndrome
Vitamin D - Healing My Skin And My Nervous System
Overview: 8 month history of paroxysmal panic attacks, anxiety, dissociation, orthostatic tachycardia, sleep disturbances and exaggerated sympathetic activity, without psychological trigger.
I'm currently being swallowed up in the NHS's waiting games. My most recent test was for urinary metanephrines, the results of which I'm hoping to hear about this week. It seems pheochromocytoma (pheo) is being considered as a potential cause of my issues.
Oddly, I had already considered pheo to be a potential cause, at the beginning of my disease, but dismissed it because I didn't have the headaches or sweating that are characteristic of it. I'd later find out not every pheo manifests in this way, and orthostatic tachycardia, which I do have, is present in over 60% of pheo patients.
Just recently I had come across a Reddit thread describing the sting of the Irukandji jellyfish and the resulting 'Irukandji syndrome.' Here is one particular symptom:
"One unusual symptom associated with the syndrome is a feeling of "impending doom". Patients have been reported as being so certain they are going to die, they beg their doctors to kill them to get it over with."
I have previously written about the death anxiety I have experienced during the course of this illness. I found interesting the overlap my condition has with this Irukandji syndrome. Lo and behold:
"The exact mechanism of action of the venom is unknown, but catecholamine excess may be an underlying mechanism in severe cases. Animal studies appear to confirm a relationship between envenoming and an increase in circulating noradrenaline and adrenaline."
It seems that the catecholamines are the hormones that make you fear for life, not just your own, but, as I experienced, for others as well. Pheo is a condition in which excess catecholamines circulate in your body, and that might explain the overlap in symptoms (although the Irukandji sting is more potent, no doubt).
So, up until yesterday I've been feeling fairly confident that pheochromocytoma is the answer, and that this week will be the beginning of my search for the tumour. As I should expect by now, though, it's not going to be straightforward - all of my previous assumptions have been wrong, why not this one? A new piece of evidence has come to light.
Throughout my illness I have experienced what I call 'sleep starts' - when I drift off to sleep, I am sometimes awakened with a 'start', with an accompanying adrenaline rush. Since taking vitamin D to correct a deficiency, two months ago, I stopped having incidences of this kind, but recently they have resurfaced and now I'm noticing the problem is occurring mid-sleep, too. It often disturbs my partner, because I 'gasp' for air. This can happen several times per night, or it can happen just the once, or not at all. The randomness of it is frustrating. I notice if I stay up very late, and am very tired, it won't happen. My partner asked me if I ever thought whether or not I have sleep apnea, as these episodes seem very similar. Given that I only started to notice this happening at the same time the rest of my symptoms began, I investigated the link between pheochromocytoma and sleep apnea. I found something potentially game-breaking: several studies indicating that sleep apnea itself can result in increased sympathetic nervous activity, and urinary metanephrine levels similar to that seen in pheochromocytoma. Here are a couple:
Obstructive Sleep Apnea Presenting as Pseudopheochromocytoma
The Importance of Exclusion of Obstructive Sleep Apnea During Screening for Adrenal Adenoma and Diagnosis of Pheochromocytoma
I guess it's just something to bear in mind. Given that sleep apnea is way more common than pheochromocytoma, and my past history of loud snoring and random sore throats, it's given me hope that something less serious and more easily managed is the source of all of my issues. I've yet to come across the idea that pheochromocytoma can cause sleep apnea, either.
Time will tell. My symptoms on the whole have decreased ever since they began in August, although I have read that you can become desensitised to a constant excess of these hormones.
It's going to be a busy month. I'm going to get my vitamin D levels retested, I need to do another 24-hour ambulatory monitoring session, and I'm going to investigate this sleep apnea further.
Previous threads:
Is This Hyperthyroidism?
The Past Five Months Have Been Hell (Subacute Lymphocytic Thyroiditis?)
Postural Orthostatic Tachycardia Syndrome
Vitamin D - Healing My Skin And My Nervous System
Overview: 8 month history of paroxysmal panic attacks, anxiety, dissociation, orthostatic tachycardia, sleep disturbances and exaggerated sympathetic activity, without psychological trigger.
I'm currently being swallowed up in the NHS's waiting games. My most recent test was for urinary metanephrines, the results of which I'm hoping to hear about this week. It seems pheochromocytoma (pheo) is being considered as a potential cause of my issues.
Oddly, I had already considered pheo to be a potential cause, at the beginning of my disease, but dismissed it because I didn't have the headaches or sweating that are characteristic of it. I'd later find out not every pheo manifests in this way, and orthostatic tachycardia, which I do have, is present in over 60% of pheo patients.
Just recently I had come across a Reddit thread describing the sting of the Irukandji jellyfish and the resulting 'Irukandji syndrome.' Here is one particular symptom:
"One unusual symptom associated with the syndrome is a feeling of "impending doom". Patients have been reported as being so certain they are going to die, they beg their doctors to kill them to get it over with."
I have previously written about the death anxiety I have experienced during the course of this illness. I found interesting the overlap my condition has with this Irukandji syndrome. Lo and behold:
"The exact mechanism of action of the venom is unknown, but catecholamine excess may be an underlying mechanism in severe cases. Animal studies appear to confirm a relationship between envenoming and an increase in circulating noradrenaline and adrenaline."
It seems that the catecholamines are the hormones that make you fear for life, not just your own, but, as I experienced, for others as well. Pheo is a condition in which excess catecholamines circulate in your body, and that might explain the overlap in symptoms (although the Irukandji sting is more potent, no doubt).
So, up until yesterday I've been feeling fairly confident that pheochromocytoma is the answer, and that this week will be the beginning of my search for the tumour. As I should expect by now, though, it's not going to be straightforward - all of my previous assumptions have been wrong, why not this one? A new piece of evidence has come to light.
Throughout my illness I have experienced what I call 'sleep starts' - when I drift off to sleep, I am sometimes awakened with a 'start', with an accompanying adrenaline rush. Since taking vitamin D to correct a deficiency, two months ago, I stopped having incidences of this kind, but recently they have resurfaced and now I'm noticing the problem is occurring mid-sleep, too. It often disturbs my partner, because I 'gasp' for air. This can happen several times per night, or it can happen just the once, or not at all. The randomness of it is frustrating. I notice if I stay up very late, and am very tired, it won't happen. My partner asked me if I ever thought whether or not I have sleep apnea, as these episodes seem very similar. Given that I only started to notice this happening at the same time the rest of my symptoms began, I investigated the link between pheochromocytoma and sleep apnea. I found something potentially game-breaking: several studies indicating that sleep apnea itself can result in increased sympathetic nervous activity, and urinary metanephrine levels similar to that seen in pheochromocytoma. Here are a couple:
Obstructive Sleep Apnea Presenting as Pseudopheochromocytoma
The Importance of Exclusion of Obstructive Sleep Apnea During Screening for Adrenal Adenoma and Diagnosis of Pheochromocytoma
I guess it's just something to bear in mind. Given that sleep apnea is way more common than pheochromocytoma, and my past history of loud snoring and random sore throats, it's given me hope that something less serious and more easily managed is the source of all of my issues. I've yet to come across the idea that pheochromocytoma can cause sleep apnea, either.
Time will tell. My symptoms on the whole have decreased ever since they began in August, although I have read that you can become desensitised to a constant excess of these hormones.
It's going to be a busy month. I'm going to get my vitamin D levels retested, I need to do another 24-hour ambulatory monitoring session, and I'm going to investigate this sleep apnea further.
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