Home > Medical Reference > Encyclopedia (English)

Toggle: English / Spanish

Ask Our Experts

Get answers to your specific medical questions from UM Medical Center experts.

Note: This is for informational purposes only. Doctors cannot provide a diagnosis via e-mail.

 

Related Content

University Eye Care

University Laser Vision Center

Specialty Services

Our Doctors

Eyelid bump

Definition:

Most bumps on the eyelid are styes. A stye is an inflamed oil gland on the edge of your eyelid, where the lash meets the lid. It appears as a red, swollen bump that looks like a pimple. It is tender, especially to touch.

Alternative Names:

Bump on the eyelid; Stye

Causes, incidence, and risk factors:

A stye is caused by bacteria from the skin that get into the hair follicle of the eyelash. Hair follicles contain oil glands that become inflamed from the bacteria. Styes are similar to common acne pimples that occur elsewhere on the skin. You may have more than one stye at the same time.

Styes usually develop over a few days and may drain and heal on their own. A stye can become a chalazion -- this is when an inflamed oil gland becomes fully blocked. If a chalazion gets large enough, it can cause trouble with your vision.

If you have blepharitis (see eye redness ), you are more likely to get styes.

Other possible eyelid bumps include:

References:

Pasternak A, Irish B. Opthalmologic infections in primary care. Clin Fam Pract . 2004; 6(1): 19.

Noble J. Textbook of Primary Care Medicine . 3 rd ed. St. Louis, Mo: Mosby, Inc. 2001.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is the first of its kind, requiring compliance with 53 standards of quality and accountability, verified by independent audit. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial process . A.D.A.M. is also a founding member of Hi-Ethics (www.hiethics.com) and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 1997-2007 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

adam.com