Underarms. Contact dermatitis to the underarms can be due to topically applied agents as well as chemicals leaching out of clothing. Antiperspirants, with out without deodorants, can cause dermatitis of the underarms. Chemicals that leach out of clothing as a result of sweating, such as dyes, resins, formaldehyde are other causes. Shaving and depilatory agents for removal of hair are other common causes of underarm contact dermatitis.
Legs. Common causes of contact dermatitis of the legs includes topical medications, shaving agents, moisturizers, and stocking materials and dyes. Brushing up against poison-oak and poison-ivy plants can lead to contact dermatitis in a classic linear pattern.
Genital/rectal area. Common causes of contact dermatitis of the genital/rectal area include topical medications, suppositories, douches, latex condoms, diaphragms, lubricants, spermacides, sprays and fragrances from toilet paper, soaps, bubble bath and diapers. It is important to consider agents transferred from the hands, including nail polish and chemicals from plants, including poison oak and ivy.
Other causes of dermatitis in this area include:
- ammonia in the urine in infants and adults with incontinence
- anal itching can be worsened by ingesting spices, antibiotics and laxatives
Find out more about the common causes of contact dermatitis, and important avoidance measures to follow.
Source: Beltrani VS, Bernstein IL, Cohen DE, Fonacier L. Contact Dermatitis: A Practice Parameter. Ann Allergy Asthma Immunol. 2006;97:S1-38.
DISCLAIMER: The information contained in this site is for educational purposes only, and should not be used as a substitute for personal care by a licensed physician. Please see your physician for diagnosis and treatment of any concerning symptoms or medical condition.
