General Dermatology CS-OSPE
Koebner phenomenon of psoriasis
Where else would you find Koebner phenomenon?
- Psoriasis
- Lichen planus
- Warts
- Vitiligo
Appearance of a primary skin condition in the site of a trauma
Punch Biopsy
What does this instrument do?
- A-Punch biopsy
The correct usage for it is?
- B-Perpendicular to the skin surface
Loratadine
Indication:
- Urticaria
- Antihistamine 2nd generation
Malar Rash / Butterfly rash - SLE with photosensitivity
This rash called?
- B-Butterfly rash
Seborrheic dermatitis (Crusts + nose involved) If systemic involvement, can be SLE-caused; nasolabial fold is spared.
What lab test appropriate to order for this patient?
- A-ANA
The “butterfly rash” of lupus
- Four SLE criteria are dermatologic:
- Photosensitivity
- Discoid lesions
- Oral ulcerations
- Malar rash
Cryogun / Cryotherapy Instrument & Uses
What is the name of the used substance? Liquid nitrogen
What is this instrument?
- Cryogun
- Open spray
- Cryotherapy Set
What is the name of the procedure?
- Cryotherapy
It works at which degree?
- -42
- -40°C
- -4OC°
- If Cotton bud —> -20°C
- If Metal forceps —> -15°C
It treats all except?
- Melanoma
- Angioma
Some of the common conditions responsive to cryosurgery: Benign lesions
- Viral Warts
- Skin tags
- Seborrhoeic keratoses
- Sebaceous hyperplasia - milion
- Molluscum contagiosum
- Milia - cherry angioma.
- Wart - chery angioma - seborrhic keratosis
Pre-malignant lesions
- Actinic/solar keratoses - Scabies Bowens
- Bowens disease (Intra-epithelial carcinoma) - Eczema
- Actinic cheilitis
Malignant Lesions
- Superficial basal cell carcinomas - electrodular
- Nodular basel cell carcinoma
Albinism
Q1- What process is related to this condition?
- Tyrosine to melanin
Q2- Treatment is?
- A. Dermatology close follow up and sun protection
Ulcer Lesion
6-Which one is true?
- B-Loss of the epithelium of epidermis and dermal and heals with scarring
Pitting Nail / Nail Pitting
What is this?
- Pitting nail
- Nail pitting
Can be associated with which condition?
- B-Alopecia areata
- Lichen planus
- Alopecia Areata
- Psoriasis
Lichenification
24- Which one of those is true?
- Answer: Thickening of the skin with exaggeration of skin creases
Nikolsky’s sign
30- Associated with which condition?
- Answer: PV
Rosacea
Case 4: Rosacea
Patient with erythema, papules, pustules. Erythema of the central face that has persisted for months or more, after age 30, no comedone. Erythema and telangiectasia, Worse with exercise, heat, hot foods, alcohol
This condition is triggered by?
- Answer: Hot spicy food
What is the diagnosis? Rosacea
What is the differential diagnosis?
- Seborrheic dermatitis
- Acne Vulgaris (AV)
Describe?
- Primary features: flushing, papules, pustules and telangiectasia.
- Secondary features: burning, stinging, edema, plaques, dry appearance, phyma, peripheral flushing and ocular manifestations.
What are the types?
- Erythematotelangiectatic
- Papulopustular
- Phymatous (rhinophyma)
- Ocular
How to manage this patient?
- Full history
- Examination
- Education
- Sunscreens
- Avoidance of aggravating factors.
- Topical antibiotic: Metronidazole, sodium sulfacetamide
- Oral tetracycline ⇒ Papule & Pustule
- Laser and light therapy
- Keratolytic
Erythema multiforme
39- This lesion is called?
- Answer: Target sign
Instrument Identification / Shave Biopsy
- What is the name of this instrument? Dermablade.
- What is used for? Shave Biopsy. Superficial upper dermis or Sensitive anatomic area. Seborrheic keratosis This is the appropriate (technique) type of skin biopsy for this lesion at this site.
If the skin biopsy showed superficial basal cell carcinoma, mention one treatment? - Cryotherapy - Electrodisscition | Curretage
Instrument Identification (Hyfrecator)
- Name the instrument: hyfrecator
- Mention 1 benign and 1 malignant skin conditions that can be used to treat? Condition one is: viral wart - sk Condition two is: superficial BCC - scc
Second image
- curtage
- Electrodesication
Wood’s Lamp Test
- Test name: wood’s lamp
- 2 indications:
- Tinea versicolor → golden yello
- Tinea capitis → green
- Vitiligo → milky white
- Erythroderma → Red
Dermatographism
itchy condition developed due skin rubbing
- What is the name of this specific type of skin reactions? Dermatographism
- It is due to increase level of Histamine
Dermoscope, Melanoma
What is the device?
- Dermoscope
Used to for:
- Melanoma
Phototherapy Cabinet / UVA Cabin
This cabinet used to emit medical light.
-
What is the light delivered by this device? Narrowband UVA
-
Name the machine: UVA Cabin
-
Which of the following disease can be treated using this device?
- Psoriasis vulgaris
- vitiligo
- Psoriasis
Clobetasol Propionate Cream
- It is a super high potency topical steroid
- Mention three conditions you can use this drug to treat them? Severe chronic eczema, psoriasis, keloid, lichen planus, allergic contact dermatitis
- This drug is suitable to be used to treat lesion in soles, palms, extensors & NOT in face, genitalia, axilla ( folds )
General Skin Signs (Erythema, Papule, Vesicle)
Interpretation after 4 days
positive signs:
- Erythema
- papule
- vesicle
Skin Layers and Proteins
- Mention the layer From Inside to Outside so Basal ⇒ spinous ⇒ granulum ⇒ corneum
- Mention 5 proteins and Each one in which layer we found it so
- keratin - Fillagrine ⇒ epidermis
- *Elastine - Colagin ⇒ dermis
- Desmoglain ⇒ spinous layer
Scraping Skin Test (KOH Test)
1- what is name of the test ?
Scraping skin test
2- what is the add substance Potassium hydroxide
3- two different disease that you could diagnose through this test ? Tinea capitis - tinea versicolor