White spots on the skin can appear for many different reasons. In many cases, they are harmless, but sometimes they may be linked to an underlying skin condition. These spots can vary in size, shape, and location, and they may appear gradually or suddenly.
One common cause is a fungal infection known as tinea versicolor. This condition happens when a natural yeast on the skin grows too much, creating lighter patches on areas such as the chest, shoulders, back, or neck. The spots often become more visible after sun exposure because the surrounding skin tans while the affected areas stay lighter.
Another possible cause is vitiligo, a condition where the skin loses its natural pigment. This can lead to smooth white patches that may slowly spread over time. The spots often appear on the hands, face, elbows, knees, or around the mouth and eyes.
White spots can also result from dry skin or mild eczema, especially in children and teenagers. In these cases, the skin may look flaky or slightly rough. Sun damage and aging may also cause small pale spots, particularly on areas frequently exposed to sunlight like the arms and legs.
