Hearing Protection and NRR (Noise Reduction Rating)

For all hearing protection devices from ear plugs to ear muffs, there is a NRR (Noise Reduction Rating) score that informs consumers how much of a decrease in noise exposure to expect with use. For example, if an ear plug has a NRR score of 30, use of the device would be expected to reduce a 90 decibel sound by 30 decibels resulting in a noise exposure of 60 decibels. If two hearing protection devices are used, an ear plug inside the ear canal followed by ear muffs over the ear, the ultimat…

Continue Reading

Stabbing Headache Around Eye or Cheek

Do you suffer from a stabbing headache in the areas denoted in red? Do these headaches seemingly come out of nowhere one day? Perhaps started after a viral upper respiratory infection? You may be suffering from a condition known as contact point headache . This type of headache is also known as: • Sluder's neuralgia • Anterior ethmoid neuralgia • Sphenopalatine ganglion neuralgia • Pterygopalatine ganglion neuralgia This type of headache has often been confused with cluster heada…

Continue Reading