My 11-year-old son has a painless, dome-shaped, dark gray mole on his forearm. What could be the probable diagnosis?

Q. What could be the reason for a painless, dome-shaped, dark gray mole on the forearm of my 11-year-old son?

Answered by
Dr. Sandhya Narayanan Kutty
and medically reviewed by Dr. K Shobana
This is a premium question & answer published on Oct 13, 2022 and last reviewed on: Sep 22, 2023

Hello doctor,

My son is 11 years old, and I recently noticed a dome-shaped mole on his forearm. It is painless and dark gray in color. I am a little worried about this. Kindly help. Thank you.



Welcome to

I read your query and understand your concern. As per the image (attachment removed to protect the patient's identity) and history provided, your child may be having molluscum contagiosum. It is a viral infection most common among children and appears as round, dome-shaped, fluid-filled vesicles that are slightly pearly white, pink to purple colored or white, or flesh-colored with a small central depression or a dip in the middle. They are most often not accompanied by any symptoms and are harmless. They usually do not require any treatment and will go on their own with time which is called self-limiting. My suggestions are the following. (Consult a specialist doctor, talk with them, and take medications with their consent.) Apply topical Zinc oxide cream twice daily on the affected area creams to lessen their appearance. Take Multivitamin syrup one teaspoon daily for one month. I would advise you to consult a dermatologist in person for a close inspection and examination of your child's rashes for early diagnosis and intervention in the form of manual removal. Do not worry; with timely diagnosis and intervention, it will subside. Kindly follow up in case of further queries. Thank you.

Hello doctor,

Thank you for your response. The lesion looks hard, and there is no fluid inside. Please check the latest images attached. Thank you.



Welcome back to

I have reviewed the images you attached (attachment removed to protect the patient's identity) and it appears to be molluscum contagiosum only. Molluscum contagiosum is mostly asymptomatic and is usually firm to hard on touch consisting of a cheesy material expressing out or may also consist of pus or fluid. However, the contents are not expressed at home because they are contagious and are usually done by a professional. To rule out other conditions, including angioma or moles (another differential diagnosis), in-person consultation with a dermatologist is advised as the lesion may be biopsied for histology examination to know the contents of the lesion and to reach a confirmatory diagnosis. Since your child is young, it would be advised to have the lesion examined. I hope I was helpful to you. Thank you.

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