Here are some key points about neuropathy. More detail and supporting information is in the main article. 1  Neuropathy is a common condition. 2  Neuropathy is a complication of a number of different medical conditions. 3  Three types of nerve can be involved; autonomic nerves, motor nerves and sensory nerves. 4  Sometimes single nerves, or nerve sets are affected.
If you never remove the scale from a water heater tank the clanking or cracking noise heard at the water heater during operation may eventually cease when the scale solidifies, no longer trapping hot water and interfering with its movement upwards in the water tank.
Your water heater can make noise in a variety of ways ranging from hissing, popping, tapping, banging, and even jackhammer sounds. Some are indicators of problems while others are just age and improper maintenance that really are not much of a concern but will go away when the water heater is eventually replaced.