Atopic Dermatitis

by Carlo Raj, MD

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    Here, we’ll take a look at atopic dermatitis. Now, this is extremely common, and must be spoken of why, because when you talk about atopic type of issues, you’ve heard of asthma. With asthma, majority of your asthma is of what type? Oh yeah, it’s atopic, isn’t it? There is intrinsic as well but you focus on atopic. The point is this. When you talk about atopy or atopic, what does that mean to you? You’re talking about a patient in environment that has been exposed to certain allergens. And obviously, in the U.S., we have pollen, pollen, pollen, whatever it may be, huh? When you’re exposed to that type of allergen, there is every possibility that you might then elicit a type 1 hypersensitivity. And therefore, you would have release of histamine working on H1 receptors bringing about bronchoconstriction that gives you your atopic asthma. In such patients, you might also have development of atopic dermatitis. Familial maybe, maybe unknown. Associated with asthma. Let me stop there and make sure that you’re crystal clear about that association. Oftentimes, as I told you earlier, if your patient is experiencing asthma-like symptoms, there’s every possibility that atopic dermatitis is also part of this. Also, allergic type of rhinitis. This is called your atopic triad; asthma, rhinitis, and dermatitis. Obviously, immunologically, this is your type 1 hypersensitivity involvement of your helper type 2 T-cells. Demographics: increasing incidence, especially in the U.S. Most common in childhood, and growing out of it is luckily what happens to the child. So, if there is atopic asthma and there is atopic dermatitis and rhinitis or whatnot, then the patient, the child, as he or she is growing up, will no longer suffer from it. That’s always good news. What about the morphology? Highly pruritic as you...

    About the Lecture

    The lecture Atopic Dermatitis by Carlo Raj, MD is from the course Inflammatory Skin Diseases.

    Included Quiz Questions

    1. Type I hypersensitivity
    2. Type II hypersentivity
    3. Type III hypersensitivity
    4. Type IV hypersensitivity
    5. Delayed hypersensitivity reaction
    1. Pruritic and eczematous
    2. Ulcerative and non-healing
    3. Clearly demarcated and hypopigmented
    4. Scaly and dry
    5. Maculopapular rash in the groin and scalp
    1. Antihistamines and steroids
    2. Methotrexate and steroids
    3. Fluconazole and antihistamines
    4. Ketoconazole and methotrexate
    5. Acetaminophen and steroids
    1. Difficulty in breathing
    2. Hair fall
    3. Constipation
    4. Difficulty in falling asleep
    5. Blurred vision
    1. Symptoms change with age
    2. Presence of perianal lesions
    3. Facial "butterfly rash" over the nasal bridge
    4. Typically seen in pediatric age group
    5. Increased incidence in children wearing diapers

    Author of lecture Atopic Dermatitis

     Carlo Raj, MD

    Carlo Raj, MD

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    Smoothly presented lecture, good content, could use some additions
    By George L. on 14. May 2017 for Atopic Dermatitis

    Good lecture. The talking is very smooth and continuous not robotic like it sometimes tends to be the case with Dr.Raj. Excellent! Good explanation of the terms and the difference between atopic and contact dermatitis! Some more elaboration on treatment options, including non-pharmacologic and the role of allergen testing (should you do it or not?) would be a good addition.

    Good, need more information
    By Febelia Devina S. on 19. April 2017 for Atopic Dermatitis

    Easy to understand. I recommend adding more information regarding medication such as what kind of systemic seroid we are using.

    Non-pharmacological options
    By Hamed S. on 07. April 2017 for Atopic Dermatitis

    Fantastic talk but would have liked further information on non-pharmacological treatment and also the role of allergen testing