Seborrheic Dermatitis (Seborrheic Eczema) and Actinic Keratosis (Solar Keratosis)

by Carlo Raj, MD

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    Our topic now, we'll go through a bunch of names that sound quite a like, so I really need you to focus on the manner in which I’m describing and pronouncing these names, okay? The last time we’ve seen the term seborrheic is something that you want to make sure that you are firmly, firmly familiar with. When we talked about -- Well do you remember that waxy, greasy, yellow type of appearance in an infant known as a cradle cap? What was that called? Seborrheic dermatitis. Clear? So if you’re not familiar with seborrheic dermatitis, go back and review that in our discussion. Our topic here is seborrheic keratosis. Where you’ve learned about this and where you’ve seen this in medical school in your education has been with Leser-Trélat sign, but I’m really going to go into further detail. Because it’s not always that. Very common in the elderly. Has nothing to do with GI cancer. Nothing to do with gastrointestinal neoplasia. Is that clear at this point? Very common in the elderly. Greater than 65% of persons older than 80 may have quite a number of these seborrheic keratosis or keratoses. Thought to be inherited in an autosomal dominant fashion with a cherry angioma. You know, with cherry angioma. A cherry angioma versus a strawberry hemangioma. A strawberry hemangioma was seen in a child and here, the size of that particular rash literally looks like a peel of strawberry. You would recommend that it would get bigger then it would subside over maybe weeks, months, years with strawberry. A cherry hemangioma or cherry angioma will be permanent and once again will be a benign accumulation of blood in your blood vessel. And say that you have these cherry hemangiomas that are then going to give what’s known as...

    About the Lecture

    The lecture Seborrheic Dermatitis (Seborrheic Eczema) and Actinic Keratosis (Solar Keratosis) by Carlo Raj, MD is from the course Neoplastic Skin Diseases. It contains the following chapters:

    • Seborrheic Keratosis
    • Actinic Keratoses

    Included Quiz Questions

    1. This lesion has no malignant potential
    2. Has malignant potential and needs intervention
    3. Needs further evaluation and treatment
    4. High dose of steroids is strongly recommended
    5. Needs surgical treatment
    1. Actinic keratosis
    2. Seborrheic dermatitis
    3. Seborrheic keratosis
    4. Benign nevus
    5. Pyogenic granuloma
    1. Seborrheic keratosis
    2. Seborrheic dermatitis
    3. Actinic keratosis
    4. Strawberry hemangioma
    5. Psoriasis
    1. By UV radiation
    2. Exposure to chemicals
    3. Exposure to extreme heat
    4. Itching
    5. By the bite of an insect

    Author of lecture Seborrheic Dermatitis (Seborrheic Eczema) and Actinic Keratosis (Solar Keratosis)

     Carlo Raj, MD

    Carlo Raj, MD

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