Reviewed By:
Scott Nass, MD, MPA, FAAFP, AAHIVS (Primary Care)
Dr. Nass received dual medical degrees from the David Geffen School of Medicine at UCLA and Charles R. Drew University in Medicine and Science. He completed Family Medicine residency at Ventura County Medical Center with subsequent fellowships at Ventura, University of North Carolina-Chapel Hill, George Washington University, and University of California-Irvine. He holds faculty appointments at Keck School of Medicine of USC, Loma Linda University School of Medicine, and Western University of Health Sciences.
Yukiko Ueda, MD (Dermatology)
Dr. Ueda graduated from the Niigata University School of Medicine and trained at the University of Tokyo Medical School. She is currently a clinical assistant professor at the Department of Dermatology, Jichi Medical University, and holds several posts in the dermatology departments at Kyoto Prefectural University of Medicine, Komagome Hospital, University of Tokyo, and the Medical Center of Japan Red Cross Society.
Content updated on Jan 19, 2024
Following the Medical Content Editorial Policy
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There is a lump
Redness of the skin
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Affected area of skin has stinging or tingling
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Also called sebaceous cysts, these harmless bumps under the skin are more common in men. They can be caused by skin irritation, injury, or surgery.
Your doctor may ask these questions to check for this disease:
Since they're harmless, they usually don't require treatment. However, a simple surgery can be performed for infected cases or those causing discomfort.
Maeda T, Mishima K, Imanishi J, Shirahata M, Suzuki T, Adachi JI, Sasaki A, Nishikawa R. An Epidermoid Cyst of the Thoracic Spine in an Elderly Patient. World Neurosurg. 2019 Jul;127:113-116. doi: 10.1016/j.wneu.2019.03.262. Epub 2019 Apr 2. PMID: 30951916.
https://www.sciencedirect.com/science/article/abs/pii/S1878875019309428?via%3DihubKhalid S, Khan SA, Aurangzeb A, Muhammad G, Khan Afridi EA, Muhammad D. Intradiploic Epidermoid Cyst Of The Skull. J Ayub Med Coll Abbottabad. 2021 Apr-Jun;33(2):349-351. PMID: 34137560.
https://jamc.ayubmed.edu.pk/jamc/index.php/jamc/article/view/9211/3122Sîrbu OM, Chirteş AV, Mitricã M, Sîrbu CA. Spinal Intramedullary Epidermoid Cyst: Case Report and Updated Literature Review. World Neurosurg. 2020 Jul;139:39-50. doi: 10.1016/j.wneu.2020.03.207. Epub 2020 Apr 13. PMID: 32298825.
https://www.sciencedirect.com/science/article/abs/pii/S1878875020306781?via%3DihubLee S, Jang M, Mann FA, Choi S, Lee JK, Kim JK. Intradiploic epidermoid cyst in a dog. J Am Vet Med Assoc. 2020 Jul 15;257(2):183-188. doi: 10.2460/javma.257.2.183. PMID: 32597736.
https://avmajournals.avma.org/view/journals/javma/257/2/javma.257.2.183.xmlCui X, Wu X, Yao X. Surgical treatment for a giant epidermoid cyst on the buttock. Dermatol Ther. 2020 May;33(3):e13275. doi: 10.1111/dth.13275. Epub 2020 Feb 21. PMID: 32061013.
https://onlinelibrary.wiley.com/doi/10.1111/dth.13275Female, 40s
This symptom checker site is a great resource to either get an idea of what is happening inside your body or even get a second opinion without incurring another huge bill. It also provides a way to connect with a professional if needed. I really enjoy this site.
(Aug 30, 2024)
Female, 50s
I liked it better than Mayo. It lets you give more in-depth information about the symptoms you have.
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Female, 20s
I always like coming to Ubie when I have a multi-symptom problem. I have a hard time recognizing symptoms sometimes, and Ubie asks questions that help include them.
(Aug 28, 2024)
Female, 40s
Ubie symptom checker hit the spot right away. While answering the simple questions, I'm impressed with how there are multiples to choose from, and most of them relate to what you are looking for to get a diagnosis. This app has treated me multiple times—an A++++.
(Aug 28, 2024)
Reviewed By:
Scott Nass, MD, MPA, FAAFP, AAHIVS (Primary Care)
Dr. Nass received dual medical degrees from the David Geffen School of Medicine at UCLA and Charles R. Drew University in Medicine and Science. He completed Family Medicine residency at Ventura County Medical Center with subsequent fellowships at Ventura, University of North Carolina-Chapel Hill, George Washington University, and University of California-Irvine. He holds faculty appointments at Keck School of Medicine of USC, Loma Linda University School of Medicine, and Western University of Health Sciences.
Yukiko Ueda, MD (Dermatology)
Dr. Ueda graduated from the Niigata University School of Medicine and trained at the University of Tokyo Medical School. She is currently a clinical assistant professor at the Department of Dermatology, Jichi Medical University, and holds several posts in the dermatology departments at Kyoto Prefectural University of Medicine, Komagome Hospital, University of Tokyo, and the Medical Center of Japan Red Cross Society.
Our symptom checker AI is continuously refined with input from experienced physicians, empowering them to make more accurate diagnoses.
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