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Superficial mycosis
Maculae
Papule
Vesicle
Bulla
Pustule
Nodule
Fistula
Scale
Superficial mycosis
Definition
Fungi
Pityriasis versicolor
Tinea nigra
Piedra
Bacteria
Erythrasma
Trichomycosis axillaris
Superficial mycosis
Otomycosis
Keratomycosis
Pitted keratolysis
Dermatophylosis
Pityriasis versicolor
Tinea versicolor
Maculae
Malassezia spp
Normal flora
Boys & girls
After maturation
Beauty
Warm & humidity
Season
Pityriasis versicolor
Conditions:
Health
Sweat
Greasy skin
IC.
Chronic bacterial infections
Steroids
Pityriasis versicolor
Clinical manifestations:
Maculae
White, cream, pink, red,
brown
Position
Scale
Painless
Not itching
Superficial mycosis
Pityriasis versicolor
Superficial mycosis
Pityriasis versicolor
Superficial mycosis
Pityriasis versicolor
Superficial mycosis
Pityriasis versicolor
Superficial mycosis
Pityriasis versicolor
Superficial mycosis
Pityriasis versicolor
Superficial mycosis
Pityriasis versicolor
Superficial mycosis
Pityriasis versicolor
Superficial mycosis
Pityriasis versicolor
Pityriasis versicolor
Differential diagnosis:
Vitiligo
Chloasma
Pityriasis versicolor
Laboratory diagnosis:
Sampling
Scalpel
Scathe tape
Wood ́s lamp
Direct
Culture
Pityriasis versicolor
Treatment
Selenium sulfide
Clotrimazole
Tinea nigra
Phaeoanellomyces werneckii
Exophiala werneckii
Ecology
Palm
Tinea nigra palmaris
Tinea nigra
Clinical manifestation:
Annular
Centrifuge
Regular or irregular
Painless
No itching
Tinea nigra
Differential diagnosis:
Malignant melanoma
Silver nitrate
Tinea nigra
Laboratory diagnosis:
Sampling:
Scalpel & KOH10%
Direct:
Hyphae
Chlamydioconidia
Culture:
S
Tinea nigra
Treatment
Keratolytic ointment
whitfield
Piedra
Hair
Nodule
Bread, groin, axillar
White & black
Piedra
Clinical manifestation:
White piedra:
Trichosporon beigelii
Basidiomycetes
Nodule
Bread, head, pubis
White, brown, yellow,
Soft
Piedra
Clinical manifestation:
Black piedra:
Piedra hortae
Ascomycetes
Nodule
Head
Thick
Black to brown
Piedra
Differential diagnosis:
Pediculosis
Piedra
Laboratory diagnosis:
Sampling:
Sesser & KOH10%
Direct:
White: hyphae & arthroconidia
Black: ascus & ascospore
Culture:
S
Piedra
Treatment:
Scraping
Clotrimazole
Erythrasma
Bacteria
Corynebacterium minutissimum
Chronic
Intertrigenous
Erythrasma
Clinical manifestation:
Maculae
Red or brown
Scale
Itching
No inflammation
Superficial mycosis
Erythrasma
Superficial mycosis
Erythrasma
Superficial mycosis
Erythrasma
Superficial mycosis
Erythrasma
Erythrasma
Differential diagnosis:
Pityriasis versicolor
Candidiasis
Tinea cruris
Erythrasma
Laboratory diagnosis:
Sampling:
Scalpel & simple staining
Direct:
Strand
Culture:
BHI, Blood agar
Wood ́s lamp
Erythrasma
Treatment
Erythromycin
Trichomycosis axillaris
Bacteria
Corynebacterium tenuis
Nodule
Hair
Axillaries & pubis
Red
Yellow
black
Trichomycosis axillaris
Differential diagnosis:
Pediculosis
Trichomycosis axillaris
Laboratory diagnosis:
Sampling:
Sesser & KOH10%
Direct
Culture
Trichomycosis axillaris
Treatment
Scraping and sulphur ointment 3%
Keratomycosis
INCIDENCE OF FK
Developed world
6 -35% of all microbial keratitis
Developing world
22 - >50%
FUNGAL GROUPS
Filamentous
Fusarium
Aspergillus
Dematiaceous
Yeasts
Candida
Fungal Keratitis
Risk factors:
Topical corticosteroids ↓corneal resistance to
infection
Contact lens use
Immunocomprised states
Fungal Keratitis
Risk factors
Injury, ocular surface compromise
Temperature
Wind
Humidity
Urbanisation/employment
Fungal Keratitis
Exogen
Endogen
Fungal Keratitis
Gray-white color, dry, and rough corneal
surface
White ring in the cornea and satellite
lesions near the edge of the primary
Most cases remain superficial
but deep invasion may occur
DIAGNOSIS
Clinical features (diff.diagnosis)
Microbiology
Histopathology
DNA amplification
HISTOPATHOLGY
Haematoxylin and eosin (H&E)
Periodic acid-Schiff (PAS)
Grocott
Fungal Keratitis
Treatment:
Natamycin 5% drops (filamentous)
Works particularly well Fusarium spp
Amphotercin B 0.15-0.30% (Candida)
Most effective for yeast
Otomycosis
Otomycosis
Bacterial, viral or fungal infection of
external auditory canal
Categorized by time course
Acute
Chronic
Swimmer’s ear
Organisms
1. Fungi
1.
2.
2.
3.
4.
5.
Aspergillus
Candida species
Pseudomonas species
Staphylococci
Streptococci
Gram negative rods
Risk Factors
High humidity
Water exposure
High environmental temperature
Local trauma
Allergy
Stress
Alkaline pH of canal
Otomycosis
Often indistinguishable from bacterial OE
Dull pain
Hearing loss (obstructive)
Otomycosis
Treatment
Thorough cleaning and drying of canal
Topical antifungals
Clotrimazole
Acidifying of the EAC with drops like
2% acetic acid
3% boric acid
درماتوفیلوزیس
مترشحه ،چرک
حیوان
انسان
پوسته و دمله
اسکار و آلوپس ی
مسری
درماتوفیلوزیس
Dermatophilus congolonsis
اکتینومایست
گوسفند و دام
پارازیت پوست
فصل بارانی
تماس مستقیم
Lumpy wool
عالئم بالینی
اپیدرم
زخم های کم عمق
اگزودا
کدر شدن مو
ریزش دمله
بهبود
آلوپس ی
تشخیص آزمایشگاهی
نمونه گیری
پوسته و ترشحات
مستقیم
رنگ آمیزی
متیلن بلو
گیمسا
رشته های منشعب 5 -2 ،میکرون
کشت
بالد آگار
37درجه
8کوکس ی
تشخیص آزمایشگاهی
کاتاالز مثبت
اوره آز مثبت
اسید فست منفی
هیدرولیز نشاسته مثبت
درمان
سولفات مس
سولفات روی /5درصد
پنی سیلین
کراتولیز حفره ای
Pitted keratolysis
الیه شاخی کف پا
ضایعات سطحی گرد
عامل بیماری
اکتینومایست
نوکاردیا
درماتوفیلوس
کورینه باکتریوم
عوامل مستعد کننده
رطوبت
گرما
رعایت نکردن بهداشت
چکمه
پوتین
عالئم بیماری
الیه های سطحی کف پا
انگشتان و پاشنه پا
تجزیه کراتین
ضایعات سطحی گرد
بوی نامطبوع
تشخیص آزمایشگاهی
نمونه گیری
مستقیم
پوسته
پتاس و رنگ آمیزی
رشته و کوکس ی
کشت
مشکل است
درمان
از بین بردن شرایط مستعد کننده
فرمالین 20تا 40درصد