Seborrhoeic Keratosis.

They start to appear the other side of 30!

What is a Seborrheic Keratosis?

Seborrheic Keratosis can simply be called an “SK” and many people refer to it as a “Seborrheic wart.” Seeing a “Seb K” is an expected part of a routine skin check.

A Seborrheic Keratoses become very common with increasing age, particularly in people who have inherited the genes from affected family members.

Seborrheic Keratoses are mainly made up of keratinocytes which are the predominant cells of the upper layer of the skin (epidermis). Keratinocytes produce keratin which is found in scale.

What’s the big deal about Seb Ks? Generally not much except:

  • The lesions may sometimes be itchy.
  • They can also catch on clothing and become inflamed or bleed.
  • Flat SKs in particularly may look like melanoma.
  • You might simply “not like them” – particularly if they occur in large numbers.

What does a Seborrheic Keratosis look like?

Seborrheic Keratosis is generally scaly and brown in colour (light to dark). The lesion starts flat, and usually becomes raised from the skin surface – by which time it appears “stuck on.” The surface of an SK often appears warty or dull. Colours vary from pink through to black. Seborrheic Keratosis may sometimes look like a melanoma – especially when flat. Dermatoscopy of SK will show characteristic features that usually avoids the need for a biopsy.