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Keratosis, Seborrheic

Christopher J. Weber, MD and Cesar R. Mojica-Vazquez, MD Reviewed 06/2018
 


BASICS

DESCRIPTION

  • Common benign tumor of the epidermis

  • Formed from keratinocytes

  • Frequently appears in multiples on the head, neck, and trunk of older individuals but may occur on any hair-bearing area ...

DIAGNOSIS

HISTORY

  • Usually asymptomatic

  • Trauma or irritation of the lesion may result in pruritus, erythema, bleeding, pain, and/or crusting.

PHYSICAL EXAM

  • Typically begin as oval- or round-shaped, flat, d...

TREATMENT

  • Treatment is not usually necessary due to the benign nature of the lesions.

  • Removal of seborrheic keratoses may be indicated if

    • Symptomatic (e.g., easily irritated, gets caught on clothing o...

ONGOING CARE

FOLLOW UP RECOMMENDATIONS

Patient Monitoring

After initial diagnosis, follow-up is not usually required unless 
  • Inflammation or irritation develops.

  • There is a change in appearance.

  • New seborr...

REFERENCES

1
Hafner C, Vogt T. Seborrheic keratosis. J Dtsch Dermatol Ges.  2008;6(8):664–677. [View Abstract on OvidMedline]
2
Husain Z, Ho JK, Hantash BM. Sign and pseudo-sign of Leser-Trélat: ca...

ADDITIONAL READING

  • Culbertson GR. 532-nm diode laser treatment of seborrheic keratoses with color enhancement. Dermatol Surg.  2008;34(4):525–528. [View Abstract on OvidMedline]

  • Draelos ZD, Rizer...

CODES

ICD10

  • L82.1 Other seborrheic keratosis

  • L82.0 Inflamed seborrheic keratosis

ICD9

  • 702.19 Other seborrheic keratosis

  • 702.11 Inflamed seborrheic keratosis

SNOMED

  • 398838000 senile hyperkeratosis (disorder)

  • 4...

CLINICAL PEARLS

  • Seborrheic keratoses are one of the most common benign tumors of the epidermis.

  • Prevalence increases with age.

  • Underlying internal malignancy should be considered if large numbers of seb...

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