Moles on the Skin and Lining of the Mouth
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Try one of these related symptoms.
Skin has moles or spots of different colors
Black, blue, or brown spots on the skin or elsewhere
Moles or spots of different colors on skin or lining of the mouth
About the Symptom
Small, dark brown spots that can be found in any part of the skin or lining of the mouth. These are called mucosal lentigines. Various diseases can lead to varied colorations in the mucosa, and can arise from intrinsic and extrinsic factors,and can be normal or pathological.
When to See a Doctor
Seek professional care if you experience any of the following symptoms
- Moles on the skin and lining of the mouth
Possible Causes
Generally, Moles on the skin and lining of the mouth can be related to:
- Anosacral Cutaneous Amyloidosis
Anosacral cutaneous amyloidosis is a rare condition that affects the skin from the anus to the sacral region (bottom of the spine). It occurs due to abnormal protein deposits in the skin. The exact cause is unclear, and it is more common among Asians.
- Nevus (Sebaceous Nevus, Pigmented Cell Nevus, Nevus of Ota, Epidermal Nevus)
Also known as moles, these are clumps of pigmented (colored) cells. There are many types nevii, from birthmark moles to moles that commonly arise later in life. The type of nevus /mole dictates its appearance, so they can be flat or bumpy, and range in color from skin colored to dark brown to bluish gray.
- Cutaneous Squamous Cell Carcinoma (cSCC) in situ (Bowen's Disease)
This is an early, pre-cancerous skin condition that is highly treatable. The affected area is characterized by a slow-growing red or brown scaly patch on the skin that is not painful. It usually occurs in older adults and is associated with factors like long-term exposure to the sun.
- Pityriasis Rubra Pilaris
- Neurofibromatosis
- Cutaneous Squamous Cell Carcinoma (Bowen's Disease) of the Glans of the Penis
- Localized Cutaneous Amyloidosis
- Purpura Pigmentosa
- Lichen Simplex Chronicus
- Malignant Melanoma (Including Nails)
Doctor's Diagnostic Questions
Your doctor may ask these questions to check for this symptom:
- Are there black, blue, or brown spots on your skin? (Including moles)
- How long have you had black, blue, or brown spots on your skin or elsewhere (including moles)?
Reviewed By:
Sarita Nori, MD (Dermatology)
Dr. Sarita Nori was drawn to dermatology because of the intersection of science and medicine that is at the heart of dermatology. She feels this is what really allows her to help her patients. “There is a lot of problem-solving in dermatology and I like that,” she explains. “It’s also a profession where you can help people quickly and really make a difference in their lives.” | Some of the typical skin problems that Dr. Nori treats include skin cancers, psoriasis, acne, eczema, rashes, and contact dermatitis. Dr Nori believes in using all possible avenues of treatment, such as biologics, especially in patients with chronic diseases such as eczema and psoriasis. “These medications can work superbly, and they are really life-changing for many patients.” | Dr. Nori feels it’s important for patients to have a good understanding of the disease or condition that is affecting them. “I like to educate my patients on their problem and have them really understand it so they can take the best course of action. Patients always do better when they understand their skin condition, and how to treat it.”
Yoshinori Abe, MD (Internal Medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
Content updated on Feb 6, 2025
Following the Medical Content Editorial Policy
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- Black/blue/brown spots or moles, on the skin and lining of the mouth
- Discolored macules or moles on skin/mucus membranes
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Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1References
James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the Skin: clinical Dermatology. Saunders Elsevier. ISBN 978-0-7216-2921-6.