Pollution is the introduction of harmful contaminants into air, water or soil. These contaminants can have dire effects on entire ecosystems, making life more difficult for humans, plants and animals.
What Causes Pimples under the Armpits? Actually, pimples, wherever they are, are occurred due to similar causes. The causes can be sweat, dirt, dust, bacteria, hormone, your bad psychology condition and some others. Besides, the use of wrong deodorant or body soap can also be another factor if there is underarm pimple.
Armpit Rash Causes. An armpit rash may be caused due to several different factors. Three of the most common causes of an armpit rash include friction, elevated heat and exposure to allergens. 1  The underarm skin is quite sensitive and can be easily irritated via friction. Heat rash is a condition caused due to elevated perspiration which results in the blockage of the sweat ducts occurring beneath the skin. 2  The sweat trapped under the skin then causes the formation of a bumpy armpit rash, which can occasionally be painful.