Definition Folliculitis: inflammation of the hair follicles, usually due to infection, irritation, or obstruction. Typically presents as small, erythematous papules…

Overview Both acne vulgaris and rosacea are common facial skin conditions but have distinct etiologies, age groups, and treatments. Recognising…

Definition Molluscum contagiosum (MC): a benign, self-limiting viral skin infection caused by molluscum contagiosum virus (MCV), a poxvirus. Characterized by…

BCC vs SCC vs Melanoma Feature Basal Cell Carcinoma (BCC) Squamous Cell Carcinoma (SCC) Malignant Melanoma Origin Basal cells of…

Definition Basal Cell Carcinoma (BCC): most common non-melanoma skin cancer, originating from basal cells of the epidermis. Rarely metastasizes but…

Definition Malignant melanoma: aggressive melanocyte-derived skin cancer with high potential for metastasis. Most serious form of skin cancer; early detection…

Definition Seborrheic dermatitis (SD): chronic, relapsing, inflammatory skin condition affecting sebaceous-rich areas. Characterized by erythematous, greasy, yellowish scales. Often mildly…

Definition Atopic dermatitis (AD) is a chronic, relapsing inflammatory skin condition associated with pruritus, dry skin, and eczema, often linked…

Definition Psoriasis: chronic, immune-mediated inflammatory skin disorder characterized by well-demarcated, erythematous plaques with silvery scales. Commonly involves extensor surfaces, scalp,…

Definition Urticaria (hives): transient, pruritic, erythematous wheals due to mast cell degranulation and histamine release. Duration of individual lesions: <24…

Definition Erysipelas is an acute bacterial infection of the upper dermis and superficial lymphatics, producing a well-demarcated, raised area of…

Definition Cellulitis is an acute bacterial infection of the dermis and subcutaneous tissue, usually spreading rapidly with poorly demarcated edges.…