Pemphigus is characterized by the formation of fluid-filled blisters, known as bullae, on the skin and mucous membranes. These lesions commonly appear in areas such as the mouth, nose, throat, eyes, armpits, and genital regions. The bullae are fragile and prone to rupture, often resulting in crusted, painful sores. Furthermore, individuals with pemphigus may experience systemic symptoms, including fever and general malaise.