Detailed answer

Melasma and vitiligo can appear similar in terms of patchy dark or light areas on the skin, but they have distinct characteristics and causes. Melasma is a common skin condition characterized by dark patches that usually occur on the face and are often triggered by hormonal changes, sun exposure, or genetic factors. On the other hand, vitiligo is a chronic autoimmune condition in which the skin loses its pigment, resulting in white patches anywhere on the body. It is not related to hormonal changes or sun exposure. To differentiate between the two, a dermatologist can perform a thorough examination, medical history review, and may use special tests like a Wood's lamp or skin biopsy. Consulting a healthcare professional is crucial for an accurate diagnosis and appropriate treatment.