1, different colors

Freckle lesions are light brown or dark brown spots; Sunburn spots are dark brown or light brown spots.

2. Different distribution

Freckles are common on the face, especially on the nose and cheeks; Sunburn is common on the face, outside the arm and in front of the calf.

3. Different shapes

Freckles are about the size of a needle to the size of mung beans, which are round, oval or irregularly distributed, scattered or clustered, isolated and not integrated. The sunburn is oval or smooth, about the size of rice grains to pentagonal coins.

Extended data

Freckle treatment:

1, decoloration treatment

3% ~ 5% hydroquinone cream, 0. 1% tretinoin ointment, 3% ~ 5% arbutin cream, 20% azelaic acid cream, 1% kojic acid cream, etc., can have certain effects if they are used externally for several months.

2, corrosion, destructive treatment

In the past, freckles were peeled off by treatments such as liquid nitrogen freezing, trichloroacetic acid or phenol spot coating, mechanical grinding, high-frequency electricity, and common CO2 laser. However, the above treatments are not selective to skin lesions and often cause some sequelae, so care should be taken. If the treatment is too deep, it will easily lead to concave scars or hyperplastic scars, and may lead to pigmentation or decline. At the same time, the treatment process is painful and difficult for patients to accept.

3. Selective laser therapy

Modern Q-switched laser is highly selective in the treatment of freckles, and it is the best method to treat freckles at present.

Reference link: Baidu Encyclopedia-Freckles? Baidu encyclopedia-sunburn