• What is this phenomenon called?

White dermatographism ( not elevated ) • What does it indicate?

Atopic eczema

A 25-year-old woman presents with a twelve-month history of a generalized itchy rash. A light scratch resulted in the appearance shown

1. What is the diagnosis?Dermatographism (elevated , erythematous , itchy)

1. What condition is associated with it?

Urticaria 1. what is the treatment? - Avoid trauma – Antihistamines

Atopic eczema ( child , on flexures , excoriation marks) 1. What is the cardinal feature of this disorder? Itching

1. Name 2 complications that might happen: A- Bacterial or Viral superinfections ( staph ,Eczema

herpeticum) B- Poor growth because of disturb sleep and steroid

treatment )

1. What is this change called?

Thimle pitting

1. what other nail finding you might see in this condition?

Onycholysis, Splinter hemorrhage, Subungual hyperkeratosis

1. Describe typical skin lesion in this disorder

Psoriasis ( salmon-red plaques with silver scales and well defined borders )

what is your dx?

Psoriasis- Overflow margin

What body sites would you like to check for?

Extensor surfaces ( knee , elbow ) ,palm of the hand ,soles of the foot , scalp ,Joints ,Lower back .

• what is your diagnosis?

Acne conglobata• What is the primary

lesion in this condition?

Comedones • What is the best Rx?

Systemic Isoterinoin

• A thirty five-year-old man has developed asymptomatic smooth areas of hair loss in the beard area

• What is the diagnosisAlopecia areata • What is the treatmentSteroids ( topical, intralesional , systemic)if universalis ( phototherapy )

• Name the condition?Excoriated acne with acne background habitual picking

Describe the lesion?Multiple papules , pustules and comedones and scars with seborrheic skin

Give two forms (variants) of this disorder?

Infantile acne , acne excoriated , acne vulgaris , acne conglobata

Name two topical treatments used?

-Antibiotic ( clindamycin, erythromycin)

-Retinoids ( Tazarotene)

• This 44 yrs old F. has this rash , flushes easily with sun exposure.

• Dx.

Rosacea• Rx.

- avoidance of exacerbating factors + sunscreens.

- papulopustular

Rosacea : systemic Antibiotics ( tetracycline),Topical metronidazole, if stubborn we give systemic Isotretinoin.

• What is the organism responsible for each of the following from top down:

• 1 HPV

• 2 Herpes zoster

• 3 Herpes simplex

• This child had erythema and tenderness before he had this skin loosening::

what is this condition?

Scalded skin syndrome

What is this test? Patch test

What does it detect?

Allergic contact dermatitis

What is the type of immune reaction?Type 4 hypersensitivity reaction

When do you read it?48-96 hr

• What is this? Hyphae

• What preparation do you do to appreciate this?KOH

• What test will help confirming the allergen in this patient:

patch test

Punch biopsy

Elipse or blade biopsy Excisional biopsy

• What is this called? PUVA champer

What condition is it used for? Psoriasis , vitiligo, lichen planus, alopecia areata extensive • What side effects do you expect?

Hyperpigmentation, burning , skin malignancy, premature aging

• Commonest allergen is…… nickle • The test we need is ……. patch test

• Dx? Impetigo Cause? Staph aureus infection

• Rx.? cloxacillin , floxacillin , difloxacillin

• Describesingle large pinpointed pustule.

Name dx.

Furuncle ( boil ) • Organism responsible

is …..staph aureus

• What causes this condition? HPV

• What other presentations do you know?

Facial , Anogenital , Plane ,Mosaic, Plantar

• How do you treat?- First line is Salicylic acide

-Cryothrapy , Cutary ,podophyllotoxin( face or genital )

common warts

Dermatoscope

Cryo-gun

Dx.Herpes simplex

• What are the precipitating factors?

Sun exposure,

Cold,Immunosuppression , stress , URTI , menstrual cycle.

• Rx.

Acyclovir

• What is this patch called…..Herald patch • Describe the scale…the name of the scale

is collarette scale Dx. Pityriasis rosea

• What do you see in Tzank smear?

Multinucleated giant cells

What complications might happen?Post herpetic neuralgia , Secondary bacterial infection , Motor nerve involvement, corneal ulcers and scarring

• Describe this itchy rashannular erythematous scaly lesion

• Best diagnostic tool in the clinicKOH

• What do you expect to findhyphae

• Name the disorder Tenia

• This patient had similar asymptomatic hyperpigmented rash last summer…

Dx. Pityriasis versicolor

• Rx. Imidazole , miconazole ( topical)

ketoconazole ( cream )Itraconazole (systemic)

Dx. Tenia capitis • What age group is commonly affected

children

• What is the best Rx

-Griseofulvin

Diagnosis? Tenia capitis (kerion)

How to diagnose this condition?KOH

Tretment?Griseofulvin

What is this type of hair loss? (Localized ,non scarring )What is the most likely diagnosis?

Alopecia areata

What are the poor prognostic factors for this condition?

-child -down syndrome - involve scalp margin ( posterior scalp margin ) called ophiasis .- start extensively ( totalis or universalis)

What is this type of hair loss?

male-pattern baldness

What is the Diagnosis?Androgenic alopecia

What are the risk factors?Sun exposure, Pregnancy , female , OCPs , photosensitizing drugs.

• What tool helps to predict prognosis?

Woods light

What is the best treatment?-Sunscreen -bleaching agents (hydroquinone)

Melasma

• plane, purple, pruritic, polygonal papules on wrist……… lichen planus

Describe..multiple branny scales ( الطحين ( مثل

• DxPityriasis alba

• Rx.emulsifying agents sunscreen weak steroids

Diagnosis?

Diagnosis?

Scabies s

Primary lesion?

Burrows ( linear , papules , long, greyish , scaly )Where to look for ?

Webs of hands Nipples , umbilicus , ankle , wrists , soles of infants