Acne can present as comedones (white and black heads), papules (pimples), pustules, nodules, and cysts
Post-adolescent acne: more common in female patients in their 20s, present pre-menstruation as papulonodules on lower third of face, jawline and neck
Acne fulminans (moderate to severe acne). It can also affect male patients, 13-16 years old. It presents as abrupt eruption of nodular acne which often affects face, neck, chest, back, and arms
Acne mechanica (Maskne): repeated mechanical and frictional obstruction results in comedone formation. We have seen significant increase in maskne due to frequent use of masks. The obstruction of hair follicles as well as the inflammation due to constant trauma to skin due to friction has substantially increased acne eruptions among adult patients.