Dark, brown patches on the skin that may appear uneven in texture, jagged, or raised may be a warning sign of:

The presence of dark, brown patches on the skin that exhibit an uneven texture, jagged edges, or a raised appearance is indeed indicative of potential skin abnormalities that warrant closer evaluation. Malignant melanoma is known for its distinctive characteristics, which include variations in color, irregular borders, and changes in texture or elevation. These features are typically associated with cancerous growths, emphasizing the need for early detection and treatment.

In contrast, the other conditions listed do not typically present with these specific traits. Basal Cell Carcinoma often appears as a pearly or waxy bump, usually not exhibiting the dark pigmentation seen in melanoma. Squamous Cell Carcinoma may present as a firm, red nodule or a scaly patch, differing from the dark patches associated with melanoma. Albinism is a genetic condition characterized by a lack of pigment in the skin, hair, and eyes, making it fundamentally different from the abnormal pigmentation seen in melanoma. Thus, the characteristics mentioned in the question align closely with those seen in malignant melanoma, highlighting the importance of vigilance regarding changes in skin appearance.