Brief Answer:
Neurologist migraine Dx is right,

Detailed Answer:
Thank you for asking!
i agree with your neurologist and he is very right about the most likely cause of these symptoms constellation. Now why your suspicions can't be true is because all the work up has cleared that up and that white matter changes are just age related so nothing to worry about. Now associated issues of blood pressure and Asthma and GERD has no interaction with these Migraine management. They need to be combated in their own way from diet and lifestyle modifications to medicines.
I hope you know that all.Lets come to these headaches and blurred visions management and think in broader ways other than medicines.
Migraines are the common cause of recurrent headaches and family history of this issue makes it more likely.
I want you to know that Migraine treatment involves acute (abortive) and preventive (prophylactic) therapy. Patients with frequent attacks usually require both. Measures directed toward reducing migraine triggers are also generally advisable.
Acute treatment aims to reverse, or at least stop, the progression of a headache that has started. Preventive treatment, which is given even in the absence of a headache, aims to reduce the frequency and severity of the migraine attack, make acute attacks more responsive to abortive therapy, and perhaps also improve the patient's quality of life. An overview of migraine treatment is shown in the image below.
Migraineurs should be screened for cardiovascular risk factors, which, if present, should be aggressively treated. Migraineurs with aura should also be counseled on the increased risk of stroke with smoking and oral contraceptive use.
avoid factors that precipitate a migraine attack (eg, lack of sleep, fatigue, stress, certain foods, use of vasodilators).use a daily diary to document the headaches. This is an effective and inexpensive tool to follow the course of the disease.discontinue any medications that exacerbate your headaches. If an oral contraceptive is suspected to be a trigger, you may modify, change, or discontinue its use for a trial period. Similarly, if hormone replacement therapy is a suspected trigger, should reduce dosages, if possible. If headaches persist, consider discontinuing hormone therapy.
Biofeedback, cognitive-behavioral therapy, and relaxation therapy, occipital nerve stimulators,FDA recent approved Cerena Transcranial Magnetic Stimulator (Cerena TMS), are some non pharmacological approaches which help the migraines.
Use some preventive agents (eg, frovatriptan) perimenstrually as most of the migraines in women are associated with menstrual cycles.
SOme CAM (complementary and alternative medicine) techniques have been proved effective too.Biofeedback and behavioral therapy, herb butterbur (Petasites hybridus),riboflavin (vitamin B2), magnesium, and feverfew,coenzyme Q10 (CoQ10),Melatonin,Body work - Eg, chiropractic, massage, and craniosacral therapy,Nutritional/herbal supplements - Eg, vitamins and herbs,Acupressure and acupuncture, yoga etc are some of the level 1 recommendations by XXXXXXX college of neurology for these migrainous headaches.
Some dietary triggers which trigger migraine need to be avoided.Common dietary triggers include the following:
Alcohol - Particularly wine and beer
Caffeine overuse or caffeine withdrawal
Chocolate
Aspartame - eg, NutraSweet and Equal
Monosodium glutamate (MSG) - May be found in Asian food, canned soup, frozen or processed foods, and the seasoning product Accent
Fruits - Citrus fruits, bananas, avocados, and dried fruit
Nuts - Peanuts, soy nuts, and soy sauce
Tyramine, a biogenic amine that accumulates in food as it ages, may provoke migraine. Sources include the following:
Dairy - Aged cheese
Meat - Bacon, sausage, luncheon meat, deli meat, pepperoni, and smoked or cured meat
Pickled foods
Heavily yeasted breads - Eg, sourdough
Vinegars - Especially wine vinegar
Some types of beans
exercise for migraine prevention (40 minutes 3 times weekly for 3 months) has been proved effective.,Tonabersat,Transient receptor potential vanilloid type 1 antagonists,Prostaglandin E receptor 4 receptor antagonists,Serotonin 5HT1(F) receptor agonists and Nitric oxide synthase inhibitors are some of the novel managements for the migraines these days.
I hope you see the depth of it. Discuss all the possible options with your doctor and let them select what is best for you. COnsult your neurologist and hope for the best.
Take good care of yourself and dont forget to close the discussion please.
Regards
S Khan

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Brief Answer:
Needs a lot of management

Detailed Answer:
Thank you for asking!
Increasing blockage from 20 percent to 50 is not a good thing and a neurologist needs to be consulted for its hammering with meanwhile focussing on cholesterols and hypertensions as it is chain reaction. It may soon reach to 70 and thus needing interventions like endarterectomies unless the modification of lifestyle and compliance of medicines is achieved.
History of a neurological disease with vision changes all once again need a complete neurological examination plus an ophthalmological examination. Needs a detailed work up and a complete clinical correlation for further management but it is worth considering.
Prostate infections at the age of 57 is not new and a very common presentation. A urologist will do some work up for prostate like PSA , simple urodynamics, cystoscopy, Rectal examinations etc to see where the issue lies and whether it needs any medicinal help or not. alpha blockers or 5 HT blockers may be needed as many old age people do.
Higher sedimentation rate is a broad and vague test indicating an inflammatory process and we know that you have more than one reason for inflammation so that won't be specific and would need a little deeper digging.
ont be scared.It is part of life. Challenges need to be accepted and looked after and sought help for.
And once these neurological examinations make it clear then yes i will be sure migraine it is , and migraine can be a secondary manifestation of an underlying neurological cause which i mentioned a detailed and complete neurological correlation will differentiate and sort out.
I hope it helps.

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Brief Answer:
Acidosis can cause them for sure

Detailed Answer:
Thank you for asking!
The normal reference range for PaCO2 is 35-45 mm Hg. And you level of 84 is way high and indicates a serious acidosis which needs to be addressed and yes it can be a role player in your neuro symptoms but not a sole player.

Following three are the main neurological manifestations of these metabolic issue and you have all three.
1) Headache
2)Visual changes
3)Mental confusion
I hope you get it. Your clinical correlation will make things clear and plead the guilty cause under strict monitoring of a neurological and metabolic disorder facility. Get some.
Take care

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