A member asked:

How quickly can seborrheic keratoses grow? if a skin lesion gets slightly larger within a short period of time, can it still be sk? what are causes?

2 doctors weighed in across 2 answers

Fast: Nobody knows what causes them. If a huge crop appears at once, it can be a warning of internal malignancy and an indication for endoscopy. They can appear and grow very rapidly.

Answered 6/3/2013

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Dr. Binh Ngo answered

Seborrheic keratoses: Seborrheic keratoses are benign skin lesions that are found in "older" individuals referred in layman's term as "barnacles", aging spots. You can get more as you get older. If a lesion gets bigger in a short period of time, be sure to check it out with a dermatologist to make sure that it is not an atypical mole or melanoma.

Answered 5/7/2014

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