It's an inflammatory bone condition that causes a build-up of poisons that erupt into painful skin abscesses.
The demand for extra current leads to a heat build-up in cables and equipment and can cause circuit breakers to trip out and cut the power.
Slow circulation leads to a build-up of waste products, but can be stimulated with dry skin brushing.
It had earlier been feared the man could cause an explosion in the building because of the build-up of fumes from the spilled petrol.
The use of sprays can lead to an indoor build-up of large quantities of carcinogenic vapours.
Parents undergo their own share of stress as the build-up to exam-time takes its toll.
Mr Smith stated that mud and stones from roads could also have contributed to the recent build-up in debris found in gullies.
Can you talk us through your thoughts over the winter and in the build-up to this race and this season?
the build-up of carbon dioxide in the atmosphere
If you have a chimney, get it swept at least once a year, and fit guards over the stacks to prevent a build-up of combustible material.