Eczema, psoriasis, acne, and a variety of other incredibly common skin diseases can look slightly different and darker skin.
Patients with dark skin types do not really get a different spectrum of skin disease to paler skin patients, but what does tend to happen is that the skin responses for example, to Eczema or a simple injury like a burn from a hot steam iron can look quite different and darker skin. For this reason it can be tricky to make the correct diagnosis.
Common skin disease like acne or eczema can lead to increased pigmentation getting darker and lighter patches which is particularly disturbing across the face or forehead. It is therefore important in this group of patients to treat even relatively minor skin disease fairly swiftly and hopefully with good effect.
Melasma refers to patchy increased pigmentation across the forehead, cheeks and face-typically often occurring in females than in males-more often occurring in patients with slightly darker skin rather than paler skin. It is often associated with hormonal changes and most commonly of all associated with pregnancy. Melasma can be controlled and treated when it is relatively new but it is quite difficult to treat once it has been present for three or four years. For this reason it is important that Melasma should be assessed and treated early typically within the 1st year it is present on the skin.
There is no guaranted safe and easy way to achieve this. There are several different approaches but they all need to be used very cautiously and under medical supervision of a skin expert. Medical causes of pigmentation need to be excluded first and treated if anything unusual is detected.