There are a lot of dense brown dots on the neck, considering age spots, flat warts, senile freckle-like nevus, soft fibroma, etc., mainly including medication, physical therapy and so on. 1. Age spots: age spots are benign tumors of the epidermis, which start as light brown spots and then gradually increase in size and surface roughness. Generally, it does not need special treatment, if you think it affects the aesthetic appearance, you can be frozen, laser and other methods of treatment. 2. flat warts: flat warts are caused by human papilloma virus infection, mainly manifested as slightly elevated flat papules, the color may be light brown, or normal skin color, you can apply retinoic acid ointment, fluorouracil ointment treatment, but also through the laser, freezing and other methods of treatment. 3. Age-related freckle-like nevus: this is a chromosomal genetic disease, ultraviolet radiation will aggravate the disease, generally do not need special treatment, if you think it affects the aesthetics, it can be removed by liquid nitrogen freezing. 4. Soft fibroma: generally related to age and hormone level in the body, mostly occurring in the elderly, pregnant or lactating women, generally do not need special treatment, such as self-conscious about the impact on the aesthetics can go to a regular hospital, under the guidance of the doctor for laser or cryotherapy. There are a lot of dense brown dots on the neck, it should be for the cause, standardized treatment, such as the need for medication should be used in accordance with medical advice.