Detailed answer

Dark spots on the skin, also known as hyperpigmentation, are typically caused by an overproduction of melanin, the pigment that gives color to our skin. Respiratory infections, such as the common cold or flu, do not directly cause dark spots. However, certain respiratory infections can weaken the immune system, leading to increased inflammation in the body. Inflammation can potentially trigger or worsen existing skin conditions, including hyperpigmentation. It is important to note that dark spots can also be caused by other factors such as sun exposure, hormonal changes, certain medications, and genetic predisposition. Maintaining a healthy lifestyle, using sunscreen, and seeking professional skincare advice can help in managing and reducing the appearance of dark spots.