Introduction to dermatological tests -- Looking for parasites -- Hair plucks and trichograms -- Dermoscopy -- Cytology -- Fungal and bacterial cultures and identification -- Introduction to histopathology -- Allergy testing -- Immune-mediated skin diseases -- Endocrine and metabolic skin diseases -- Infectious disease -- Diagnostic imaging -- Otoscopy and examination of the ear -- Which test to choose when -- Genetic tests for skin diseases.