All headaches need not be due to brain tumors, in fact most headaches are not, but many types of headaches have specific treatment. Moreover they can get worse if treated inappropriately.
Many causes of pain are due to some specific and often easily treatable causes. They need clinical and at times electrophysiological evaluation. See a neurologist .
Some deterioration in memory is part of normal aging process. But this can be early dementia . Moreover, many types of dementias are totally reversible. You should see a specialist
