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I would be very grateful if you could advise me how I could distinguish between the onset of a migraine and decompression sickness.
Three years ago I was half way through a diving course, when my GP failed my medical due to my history of migraine with visual disturbance. Caused either by eating dairy products or stress during exams.
My migraines have since become less severe and far less frequent and being otherwise Fit and healthy and I have not consulted with a GP since. I am desperate to be able to learn to dive before a holiday in Australia. I have heard of other divers that suffer from migraines with no ill effects provided that they are sensible, but for my own peace of mind would be grateful if you could advise on whether there are any distinguishing features that you might experience with decompression sickness that are not usually the case with a migraine.
If there is a relation between DCS/migrain
There also can be one between migrain/CO2 Toxicity
migrain/Co Toxicity
I am talking about co2 an co in your tank...
Sometimes that can happen
As far as diving with migraine is concerned--there is mixed opinion as to the proper thing to do. Some think it to be an absolute contraindication to diving, others think it to not be a significant problem. The migraine following a dive might be difficult to distinguish from decompression sickness and can possibly be provoked by CO2 retention in a diver.
Because migraine can cause fainting in adolescents, the loss of consciousness would be particularly dangerous underwater. It can also cause severe vertigo, nausea and vomiting and can be produced rapidly by swimming.
Migraine with neurological symptoms or signs is a definite contraindication in the commercial diver.
Migraine may be precipitated by a rise in barometric pressure, among a host of other things. Medications taken for migraine also might have adverse effects on the diver.
Migraine with aura has been found to be significantly associated with patent foramen ovale, thought to be a factor in the causation of undeserved decompression accidents. However, migraine has no other relationship to PFO, i.e., one does not cause the other. Repairing the PFO with an Amplatzer button does rid one of the aura of migraine. This can be found at the following reference:
Neurology 1999 May 12;52(8):1622-5 Potential source of cerebral embolism in migraine with aura: a transcranial Doppler study. http://www.ncbi.nlm.nih.gov/entrez/q...&dopt=Abstract
With your decreasing history of recent migraines and taking no medication, you would seem safe to participate fully in scuba diving - with the OK of your physician.
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