Written By: Isotherm, line drawn on a map or chart joining points with the same temperature. Isotherms are commonly used in meteorology to show the distribution of temperature at the Earthâs surface or on a chart indicating constant level or constant pressure.
Best Answer: Untreated Bipolar disorder gets worse with age, in that the more episodes of illness you have, the more likely it is that you will have another. I have been bipolar for 16years and find it has got BETTER, but ONLY because I have learnt how to manage my triggers and symptoms better.
1 (National Institute of Mental Health). 2  The median age of onset for bipolar disorder is 25 years (National Institue of Mental Health), although the illness can start in early childhood or as late as the 40's and 50's.