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Visual inspect can provide vital clues to diagnosis

Sometimes further analysis is needed:

Biopsy

• Performed for histopathology study

• Punch

• Parallel incision (shave)

• Incisional biopsy

• Excisional biopsy

Patch testing
• To confirm/identify allergy

Cultures and sensitivity

• Used to isolate and identify microoganisms

• Dermatophyte test medium

Potassium hydroxide technique (KOH)

• Commonly used for superficial fungal infections

• Skin or nail sample placed on microscope slide

Woods light

• Uses UV light - certain diseases fluoresce specific colours

Results:

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