Selvakumar Krishnan replied. A Qualifier allows a field to maintain different type of data.For example ,if 'date' is a field with quilifier ,then that date field can hold a) creation date b)sold date c)delivery date etc....
Itch armpits might mean different things including effect of armpit shaving, infections (yeast, bacterial or viral infections), cancer, pregnancy, among others. Itchy underarms can be accompanied with rashes or no rashes, redness, swelling, etc.
First, because of the number of lymph nodes in the area, itching can be the result of a lymph node problem. Secondly, when your arm is at your side, your armpit is closed. The area is therefore constantly warm at times and damp as well, making it a breeding ground for bacteria and fungi.