Sebaceous glands, which are located at the base of the hair follicles, sometimes become overactive and release too much oil. (womenshealthandfitness.com.au)
Acne is a skin condition that generally involves the infection or inflammation of oil glands at the base of hair follicles. (healthcare-online.org)
Skin rashes appear at the base of hair follicles more frequently, as once a hair loses its base; the follicle is exposed to pollutants, allergens and parasites. (dog-health-handbook.com)