The longevity of the ink depends on the pen, but most are about 6â8 months. If the pen dries up, you can try heating up the ballpoint part with hot water in case the rollerball is stuck. Another option is to keep the casing and purchase a refill f...
Common Causes of Foot drop. 1  Muscle disease. 2  Peroneal nerve. 3  Sciatic nerve. 4  Lumbosacral plexus. 5  L5 nerve root. 6  more common causes...Â».
The other 40 percent can be attributed to the causes listed above. Diabetes is by far the most common cause of neuropathy in feet, and it can lead to severe complications in the feet and legs. Diabetic peripheral neuropathy happens when the nerve fibers in diabetic patients are damaged.