1. What is the primary aetiology of vitiligo?

• Autoimmunity
• Genetics
• Infection
• Environmental factors

2. Which of the following is NOT a typical clinical feature of vitiligo?

• Hyperpigmented macules
• Depigmented patches
• Symmetrical distribution
• Spontaneous repigmentation

3. Which laboratory test can be helpful in diagnosing vitiligo?

• Complete blood count (CBC)
• Antinuclear antibody (ANA) test
• Thyroid function tests
• Serum zinc levels

4. Which treatment modality involves the transfer of melanocytes from unaffected areas to depigmented areas? 

• Topical corticosteroids
• Psoralen plus ultraviolet A (PUVA) therapy
• Microskin grafting
• Topical calcineurin inhibitors

5. Which vitiligo subtype is characterised by depigmentation primarily involving the fingers and toes? 

• Acrofacial vitiligo
• Vulgaris vitiligo
• Universal vitiligo
• Focal vitiligo