Detailed answer

Dark spots on the skin, also known as hyperpigmentation, are usually caused by an overproduction of melanin, the pigment responsible for skin color. While stomach cancer symptoms can vary, dark spots on the skin are not normally associated with this type of cancer. Stomach cancer symptoms often include weight loss, loss of appetite, persistent stomach pain, nausea, and vomiting. If you have concerns about dark spots on your skin or suspect any health issues, it is important to consult with a healthcare professional for a proper evaluation and diagnosis.