What causes verticle red lines on forhead right above eyebrows?

Vertical red lines on the forehead above the eyebrows can be caused by various factors, including skin irritation, stress, or tension in the facial muscles. Conditions such as rosacea or eczema may also contribute to redness and visible lines. Additionally, environmental factors like sun exposure or harsh weather can irritate the skin, leading to inflammation. If the lines persist or worsen, it's best to consult a dermatologist for an accurate diagnosis and appropriate treatment.