Paresthesia can also be caused simply by putting pressure on a nerve by applying weight (or pressure) to the limb for extended periods of time. Another cause of paresthesia may be direct damage to the nerves themselves, i.e., neuropathy, which itself can stem from injury or infection such as frostbite or Lyme disease, or may be indicative of a current neurological disorder.
Checking for Ketones. Ketone is a chemical produced when there is a shortage of insulin in the blood and the body breaks down body fat for energy. Ketones in the urine is a sign that your body is using fat for energy instead of using glucose because not enough insulin is available to use glucose for energy. Ketones in the urine is more common in type 1 diabetes.
But there is one type of ketone molecule, called acetone, that cannot be used and is excreted as waste, mostly in the urine and breath (sometimes causing a distinct breath odor). If enough acetone is in your urine, it can be detected using a dipstick commonly called by the brand name Ketostix (though there are other brands, they are still often called Ketostix). Even though everyone is generating ketones continuously, this detection in the urine is what is commonly called ketosis.