1 This is the primary investigation for all causes and is especially important when one has had a traumatic incident like a fall or a road accident.  MRI helps in diagnosis of injuries and abnormalities like slip disc, intervertebral disc protrusion, nerve compression, and so on.
However, the equinox marks  the changes of seasons and September 22nd or 23rd is the normal  date for the equinox. Therefore, prior to the equinox, September is  technically summer in the northern hemisphere and changes to fall  at the equinox. Conversely, in the southern hemisphere, prior to  the equinox, September is considered winter and changes to spring  at the equinox. 2 people found this useful.
The autumnal equinox is the beginning of astronomical autumn, which ends with the start of winter. In the Northern Hemisphere, that is from around September 22 to about December 22, though it varies from year to year, according to the NOAA. In the Southern Hemisphere, the season runs from about March 20 to June 21. Weather forecasters and some countries define the season as meteorological autumn by the three months in which the weather changes. In the Northern Hemisphere, this is September, October, and November. In the Southern Hemisphere, meteorological autumn occurs in March, April, and May. Falling temperatures. Autumn brings a nip in the air.