If you would like to submit a blog post for consideration, please email email@example.com
[4 min watch] Dermoscopy in general dermatology | Part 2
Tune into this latest dermoscopy update video in which Professor Giuseppe Argenziano continues last month’s exploration of general dermatology conditions that can be diagnosed through the use of dermoscopy, including pigmented purpuric dermatitis, porokeratosis, sarcoidosis, alopecia, and more.
Learn more about this topic in the HealthCert Professional Diploma program in Dermoscopy, providing tailored medical dermoscopy training online for GPs.
In the video, Prof Argenziano explores pigmented purpuric dermatitis, which includes:
- Lichen aureus
- Lichenoid purpura Gougerot-Blum
- Eczematid-like purpur
- Majocchi and Schamberg diseases
These lesions are characterised by two clues: brown pigmentation and purpuric dots which don’t go away when you press with your dermatoscope. This skin condition is a spring and summertime disease often related to sweating. It can cause itching and is often found on the trunk.
He also covers porokeratosis (which is characterised by a ring-like scale) and cutaneous sarcoidosis (indicated by an orange colour and sharp vessels).
Hair conditions are also covered, including alopecia areata (characterised by hair abnormalities and yellow dots). Prof Argenziano explains how dermoscopy in these cases can actually change your opinion of the diagnosis by adding more information and diving deeper than superficial clinical examination.
Prof Argenziano takes us through some real patient cases and highlights the dermoscopic clues which indicate these general dermatology conditions to aid with primary care diagnosis.
See all this and much more in the full video below!
Watch the full video now:
For further information on this topic, you may be interested to learn more about the HealthCert Professional Diploma program in Dermoscopy, providing tailored medical dermoscopy training online for GPs.
More updates from Professor Giuseppe Argenziano:
- Dermoscopy in general dermatology | Part 1
- 6 benign features of facial lesions
- How to diagnose flat facial lesions
Prof Giuseppe Argenziano is Professor and Head of the Dermatology Unit at the University of Campania, Naples, Italy; Co-founder and past president of the International Dermoscopy Society; and Editor-in-Chief of Dermatology Practical and Conceptual Journal. His main research field is dermato-oncology, authoring numerous scientific articles and books concerning dermoscopy, melanoma and non-melanoma skin cancer. As coordinator of the Melanoma Unit at the Campania University, he has established a successful tertiary, multidisciplinary, referral center particularly devoted to the diagnosis and management of patients with melanoma and non-melanoma skin cancer.
Over the past 25 years, Prof Argenziano has supervised over 500 foreign and Italian residents in dermatology, established scientific collaborations with 1500+ colleagues from more than 50 nations, and organised more than 500 national and international didactic meetings, courses and conferences (such as the Consensus Net Meeting on Dermoscopy and the First Congress of the International Dermoscopy Society).
Prof Argenziano has authored more than 650 full scientific articles and produced landmark primary publications and books in the field of melanoma and dermoscopy. Over the past 25 years he has been invited as speaker and/or chairman in more than 500 national and international conferences in the field of dermatology. His combined publications have received a sum total of 15.250+ citations with an h-index value of 61 (Scopus 2020).
One comment on “[4 min watch] Dermoscopy in general dermatology | Part 2”
Hello Prof Giuseppe Argenziano, I would like to express my sincere gratitude for your high scientific career. You need no introduction, and I take the opportunity to share with you a simple summary of the benefit of using dermoscopy.
It is a non-invasive diagnostic technique that allows for the observation of morphologic features that are not visible to the naked eye, thus forming a link between macroscopic clinical dermatology and microscopic dermatopathology. This “sub-macroscopic” observation of colors and structures enhances clinical assessment by providing new diagnostic criteria for the differentiation of melanoma from other benign and malignant neoplasms, both melanocytic and non-melanocytic.
Technique of dermoscopy classically involves applying a liquid or gel to the skin surface and then inspecting the lesion using a hand-held, illuminated microscope (also called a dermatoscope), a stereomicroscope, a camera, or a digital imaging system. The mag- nification of these instruments ranges from 6× to 40× and even up to 100×.
The widely used dermatoscope has a 10-fold magnification, sufficient for routine assessment of skin tumors. The fluid placed on the lesion eliminates surface reflection and renders the cornified layer translucent, thus allowing a better visualization of pigmented structures within the epidermis, the dermal–epidermal junction, and the superficial dermis. Moreover, the size and shape of vessels within the superficial vascular plexus are better visualized with this procedure.
More recently, hand-held devices have been introduced that utilize polarized light which renders the epidermis translucent. With these latter devices, use of a liquid medium is no longer required in order to visualize sub-surface structures.
Nowadays, the dermatoscope is increasingly being used by dermatologists as a stethoscope equivalent. This is because it not only facilitates the diagnosis of pigmented and non-pigmented skin tumors, but it also improves recognition of a growing number of non-pigmented skin coditions, For example, dermoscopy can facilitate the diagnosis of scabies due to the presence of the pathognomonic “jet with contrail” . Additional skin infections and infestations that may be differ entiated with increased confidence include pediculosis, tinea nigra, and molluscum contagiosum .For two of the more common inflammatory skin disorders – psoriasis and lichen planus – the use of dermoscopy allows for the visualization of specific sub-macroscopic features, including the “red dots” pattern in psoriasis and the “whitish striae” pattern in lichen planus .Scalp psoriasis and seborrheic dermatitis may also be differentiated via dermoscopy.
The most notable scalp psoriasis features are red dots and globules, twisted red loops, and glomerular vessels, whereas seborrheic dermatitis is characterized by the presence of arborizing vessels and atypical red vessels, as well as featureless areas with no particular vascular pattern and no red dots or globules. One of the newest applications of this technique is trichoscopy, namely the dermoscopic observation of the scalp, which may prove helpful in the differential diagnosis of hair and scalp diseases.
With regard to melanoma screening, the aim of dermoscopy is to maximize early detection while minimizing the unnecessary excision of benign skin tumors.
Thank you so much for your patience in reading my humble introduction to the dreamoscope.
All the best.
Dr. Saad R. Abed