black patch on forehead

The appearance of a new black patch on your forehead can indeed be concerning, especially when it’s noticeable and changes in size over a short period. Based on what you’ve described, there are a few potential causes to consider. While it could be related to sun exposure, conditions like melasma tend to appear more as a brownish patch and are commonly more diffuse rather than sharply demarcated black spots. Given your recent sun exposure without sunscreen, it’s plausible that UV damage could have played a role, but the nature of the spot and its color warrants close attention. A sudden change in pigmentation, especially if it’s dark and well-defined, raises the possibility of more serious conditions, such as a form of skin cancer like melanoma. Other possibilities could include benign lesions like seborrheic keratoses or lentigines, both of which are common but typically lighter in color. It’s crucial not to ignore a rapidly changing or newly appearing skin lesion. I strongly advise seeing a dermatologist as soon as possible for a comprehensive skin examination. It’s essential for peace of mind and health to rule out any serious underlying condition. The dermatologist might perform a dermoscopic investigation or, if needed, a biopsy to conclusively determine the cause. Meanwhile, it would be wise to protect your skin from further sun exposure by using high-SPF sunscreen and wearing protective headgear. While waiting for the appointment, avoid using over-the-counter creams that haven’t been recommended by a healthcare professional, as they can sometimes cause irritation or mask underlying issues. Quick intervention can significantly improve the outcomes in cases of serious conditions, and in less concerning scenarios, a dermatologist can offer treatment options to address cosmetic concerns effectively.