Thanks for using the forum. I am happy to address your questions, and my answer will be based on the information you provided here. Please make sure you recognize that this forum is for educational purposes only, and it does not substitute for a formal office visit with a doctor.
Without the ability to examine and obtain a history, I cannot tell you what the exact cause of the symptoms is. However I will try to provide you with some useful information.
You have not provided much detail on your symptoms so I will be unable to give you a specific answer
I am not sure what you mean by the term dizziness. When some people use the term dizziness, they often mean vertigo, or room-spinning. Others mean a light-headed, woozy feeling.
If by dizziness you mean vertigo (room-spinning), the causes could be either the inner ear or the brain. Inner ear causes of vertigo most commonly include benign positional vertigo (BPPV), which is due to small particle in the inner ear that moves out of place, and can be repositioned with simple head maneuvers. The symptoms often include vertigo that occurs with turning of the head, often while turning over in bed. Another cause, if your symptoms are associated with tinnitus (ear ringing) and hearing loss is called Meniere’s disease and can be treated with medications and sometimes surgery. And so on, several other causes from inner ear problems exist.
Vertigo can also be due to problems in the brain. The most common is a benign tumor called a schwanoma (also called acoustic neuroma). This is diagnosed by MRI of the brain. Multiple sclerosis can cause vertigo, but often, other symptoms are present as well. A normal MRI of the brain excludes multiple sclerosis.
If by dizziness you mean light-headedness, causes could include low blood pressure such as due to dehydration or autonomic dysfunction, cardiac problems, and several other non-neurologic causes. Anemia can cause light-headedness as well.
There are several causes of headaches. Headaches can be divided into primary and secondary. Primary headache disorders are headaches without a direct cause. These are diagnosed after secondary causes have been excluded. Secondary headache disorders are due to an underlying problem, there are many many causes but some include:
-Tumor (you have history of prostate cancer so this should be ruled out in your case)
-medication side effects
-central nervous system infections (meningitis)
-neck problems (as in cervicogenic headache which causes predominantly pain at the back of the head)
-bleeds in the brain
-clots in the veins in the brain
-benign intracranial hypertension (due to elevated pressure in the fluid around the brain called CSF, suggested by the presence of papilledema, or optic nerve swelling in the eye as diagnosed by an eye doctor, commonly occurs in overweight people or those taking specific medications, and best diagnosed by lumbar puncture) etc.
-intracranial hypotension (too little fluid around the brain, as occurs following surgery or lumbar puncture or less commonly spontaneously. Suggested by the headache improving when a person lies down and worsens with sitting up)
Primary headache disorders are much more common than secondary ones. There are several primary headache disorders, over 50 different types. For example migraines, which usually a pulsating throbbing one-sided pain with nausea and discomfort in bright lights that lasts several hours. Another type is cluster headaches, which are sharp pains that occur around and behind the eye often at night and are associated with tearing of the eye and running of the nose. In primary stabbing headache, sharp or jabbing pain in the head occur, either as a single stab or a series of brief repeated volleys of pain. Primary stabbing headache often occurs in people with migraine. The pain itself generally lasts a fraction of a second but can last for up to one minute in some people. Another type of stabbing headache is called paroxysmal hemicrania. This is marked by episodes of stabbing or sharp pains that occur on one side of the head and may be associated with eye tearing or runny nose. Episodes may occur several times and last 30 seconds to a minute. Yet another type of stabbing headache is abbreviated SUNCT; 100s of stabbing pains lasting seconds occur and are associated with red eye and tearing.
Without further information about your headache, it is difficult to provide you with adequate information. However, it is important for you to understand that if you have not experienced headaches in the past and you are now having new head pains, seeing a neurologist is a good idea, just to make sure there is nothing serious causing this pain. Imaging of the brain and sometimes then neck may be indicated depending on your exact symptoms, your physical examination, and other factors.
Thank you for this opportunity to answer your questions, I hope you find the information I have provided useful, good luck.
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