Clinical Hint: Adult with pitting, oil-drop discolouration, and onycholysis of multiple nails symmetrically, with scaly plaques on elbows.

Clinical Hint: Young adult with oval scaly patches on the trunk following a single larger patch noticed one week earlier, lesions align along skin creases.

Clinical Hint: Middle-aged patient with intensely itchy, flat-topped, violaceous papules on the wrists and ankles, with fine white streaks visible on the surface.

Clinical Hint: School-age child with patchy hair loss, scalp scaling, and broken hair stubs, multiple classmates affected.

Clinical Hint: Young adult with hypopigmented, fine scaly macules over the upper back and chest, worsening after sun exposure in hot, humid weather.

Clinical Hint: Adult with thick, silvery-white scaly plaques extending beyond the scalp hairline, with similar lesions on elbows and knees, and nail pitting.

Clinical Hint: Middle-aged man with intensely itchy, coin-shaped, crusted, and weeping plaques over the lower legs, worsening in dry winter months.

Clinical Hint: Patient with a spreading, atypical 'eczema-like' lesion that initially improved on steroid cream but worsened over weeks, with a faint, poorly defined border.

Clinical Hint: Fair-skinned adult with flushing, persistent central facial redness, papules, and pustules, WITHOUT any blackheads or whiteheads, worsened by spicy food and alcohol.

Clinical Hint: Young adult with itchy, uniform small papules and pustules over the upper back and chest, worsening in hot, humid weather, unresponsive to multiple courses of oral antibiotics.