PSI Barbering Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Malignant melanoma is identified by the presence of black or dark brown patches on the skin, which often exhibit uneven textures, jagged edges, or raised surfaces. This type of skin cancer originates from melanocytes, the cells responsible for producing melanin, the pigment that gives skin its color. The irregular appearance of the patches is a key characteristic that differentiates malignant melanoma from other types of skin cancer.

In contrast, squamous cell carcinoma typically appears as firm, red nodules or flat lesions with a scaly or crusted surface, while basal cell carcinoma often manifests as small, pearly bumps or flat growths with a waxy appearance. Actinic keratosis, while a precancerous condition, usually presents as rough, scaly patches on sun-damaged skin and isn’t characterized by the darker pigmentation associated with melanoma. Understanding these distinct features is crucial for early detection and treatment, as malignant melanoma is known for its potential to metastasize and is more aggressive than the other types of skin cancer mentioned.