Worried about your symptoms?
Start the test with our free AI Symptom Checker.
This will help us personalize your assessment.
By starting the symptom checker, you agree to the Privacy Policy and Terms of Use
Redness of the skin
Red when exposed to the sun
Multiple areas of skin redness or red spots
Red spots on skin
Redness over different parts of the body
Rashes over sun-exposed areas
Skin is red
Not seeing your symptoms? No worries!
Also known as "sun spots". These are caused by skin aging, particularly in areas exposed to sunlight. Some sun spots can become raised, looking like warts.
Your doctor may ask these questions to check for this disease:
Various procedures can be performed to remove these sun spots.
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 Feb 13, 2025
Following the Medical Content Editorial Policy
Was this page helpful?
We would love to help them too.
With a free 3-min quiz, powered by Ubie's AI and doctors, find possible causes of your symptoms.
This questionnaire is customized to your situation and symptoms, including the following personal information:
Biological Sex - helps us provide relevant suggestions for male vs. female conditions.
Age - adjusts our guidance based on any age-related health factors.
History - considers past illnesses, surgeries, family history, and lifestyle choices.
Your symptoms

Our AI

Your report

Your personal report will tell you
✔ When to see a doctor
✔︎ What causes your symptoms
✔︎ Treatment information etc.
See full list
Q.
Still Taking Collagen? Why Your Skin Still Ages & Medically Approved Next Steps
A.
There are several factors to consider. Collagen supplements can modestly improve hydration and elasticity, but they cannot stop UV photoaging, intrinsic collagen decline, glycation from sugar, or pigment-driven spots, so skin can still wrinkle, sag, and discolor. For meaningful results, dermatology-backed next steps include daily broad-spectrum SPF 30+, prescription retinoids, topical vitamin C, in-office collagen-stimulating procedures, lifestyle upgrades, and hormone review; see below for the full guidance and important details that could change your next steps, including when to see a doctor.
References:
* de Miranda RB, Weimer P, Rossi RC. A systematic review of the effects of oral collagen supplementation on skin aging parameters. Int J Dermatol. 2021 Nov;60(11):1449-1461. doi: 10.1111/ijd.15591. Epub 2021 Apr 22. PMID: 33887163.
* Kohl E, Mauch C, Scharffetter-Kochanek K. Understanding the mechanisms of skin aging: The interplay between intrinsic and extrinsic factors. Cells. 2022 May 21;11(10):1694. doi: 10.3390/cells11101694. PMID: 35626815; PMCID: PMC9140416.
* Lee SH, Lee CH, Lee YJ, Jeon SS. Current and Emerging Anti-Aging Strategies in Dermatology. J Cosmet Dermatol. 2021 Nov;20(11):3440-3449. doi: 10.1111/jocd.14502. Epub 2021 Sep 14. PMID: 34520779.
* Koo BS, Kim J, Kim E. The Role of Retinoids in the Treatment of Photoaging. J Cosmet Dermatol. 2022 Jul;21(7):2974-2980. doi: 10.1111/jocd.14925. Epub 2022 Apr 28. PMID: 35481745.
* Lupuscu E, Iftimie N, Coman D, Constantin T, Foia L, Stanciu M, Petrescu IA. Photoprotection and Anti-Aging: A Comprehensive Review. J Am Acad Dermatol. 2023 Jan;88(1):154-162. doi: 10.1016/j.jaad.2022.09.020. Epub 2022 Sep 21. PMID: 36152865.
Q.
Is it cancer? Why your skin is growing Seborrheic Keratosis & Medical Next Steps
A.
Seborrheic keratosis is usually not cancer and does not turn into cancer, but some skin cancers can look similar, so any new, changing, bleeding, painful, or rapidly multiplying spot should be checked by a clinician and sometimes biopsied. There are several factors to consider, including age, genetics, sun exposure, and specific warning signs; see the complete guidance below on how to tell it apart from melanoma, when treatment is needed versus watchful waiting, and urgent symptoms that could change your next steps.
References:
* Weed, D. L., & Weed, L. A. (2018). Seborrheic Keratosis: An Update. Dermatologic Surgery, 44(8), 1019-1033.
* Schwartz, R. A., & Janniger, C. K. (2018). Diagnosis and Management of Seborrheic Keratosis. Clinics in Dermatology, 36(6), 844-848.
* Lortscher, J. M., & Lortscher, A. M. (2021). Seborrheic Keratosis: A Comprehensive Review of Pathogenesis, Clinical Features, and Management. The Journal of clinical and aesthetic dermatology, 14(11), 30–38.
* Ko, J., Ko, J. S., & Ko, J. M. (2020). Diagnosing Seborrheic Keratosis: Clinicopathologic Correlation and Differential Diagnoses. Seminars in Diagnostic Pathology, 37(6), 461-468.
* Lallas, A., Giacomel, J., Argenziano, G., Zalaudek, I., Ferrara, G., & Moscarella, E. (2014). Dermatoscopy of Seborrheic Keratosis: A Pictorial Review. American Journal of Clinical Dermatology, 15(4), 283-294.
Our symptom checker AI is continuously refined with input from experienced physicians, empowering them to make more accurate diagnoses.

“World’s Best Digital
Health Companies”
Newsweek 2024

“Best With AI”
Google Play Best of 2023

“Best in Class”
Digital Health Awards 2023 (Quarterfinalist)

Which is the best Symptom Checker?
Ubie’s symptom checker demonstrated a Top-10 hit accuracy of 71.6%, surpassing the performance of several leading symptom checkers in the market, which averaged around 60% accuracy in similar assessments.
Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1Situm M, Bulat V, Buljan M, Puljiz Z, Situm V, Bolanca Z. Senile lentigo--cosmetic or medical issue of the elderly population. Coll Antropol. 2010 Apr;34 Suppl 2:85-8. PMID: 21302707.
https://pubmed.ncbi.nlm.nih.gov/21302707/Greco MJ, Bhutta BS. Seborrheic Keratosis. 2024 May 6. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan–. PMID: 31424869.
https://pubmed.ncbi.nlm.nih.gov/31424869/Barthelmann S, Butsch F, Lang BM, Stege H, Großmann B, Schepler H, Grabbe S. Seborrheic keratosis. J Dtsch Dermatol Ges. 2023 Mar;21(3):265-277. doi: 10.1111/ddg.14984. Epub 2023 Mar 9. PMID: 36892019.
https://pubmed.ncbi.nlm.nih.gov/36892019/