The forehead is also referred to as the forehead, and forehead spots are mainly seen in melasma, seborrheic keratosis and freckles, etc. Melasma is a yellowish-brown pigmentation spot that occurs on the face.
1. Melasma: it is a yellowish-brown pigmentation spot that occurs on the face, mainly distributed on the forehead, the prominent part of zygomatic bone and the lower jaw, and it can also appear on the skin of the forearm, and its causes may be related to heredity, ultraviolet ray irradiation, and changes in the secretion of sex hormone, and other factors.
2. Seborrheic keratosis: it is mainly manifested as black-brown or yellow-brown plaques slightly protruding from the skin surface, which is mainly seen on the face, but also on the back of the hand or chest and abdomen, and middle-aged and old people are the main incidence population.
3. Freckles: it is an autosomal dominant hereditary disease, which is mainly manifested as light brown or dark brown hyperpigmentation spots on the facial skin. Heredity is the main cause of freckles, and factors such as ultraviolet radiation and medication can also aggravate the symptoms of freckles.
Due to the complexity of the causes, the specific situation needs to be analyzed by the doctor in conjunction with age, gender and other clinical manifestations.