Dizziness is a general term that can describe a feeling associated with a number of other symptoms including vertigo, light headedness or just a sense of loss of balance. Each of these can be caused by different things.1  Vertigo: Vertigo is feeling a sense of spinning or motion when there is none.izziness is a general term that can describe a feeling associated with a number of other symptoms including vertigo, light headedness or just a sense of loss of balance. Each of these can be caused by different things.
Currently the basic rule is that carry on baggage must be no taller than 22 inches, no wider than 14 inches, and no deeper than 9 inches. In many cases, you'll also have to contend with limits on weight.
Carry-on baggage size regulations are set by each airline, rather than the Transportation Security Administration or another governing body. Southwest Airlines requires that carry-on baggage measures no more than 10-by-16-by-24 inches. When you arrive at the Southwest counter in the airport, you'll see a receptacle in which your carry-on bag must fit comfortably to be permitted onto the airplane.