Why do white patches appear on the face?

Jun 04, 2025 Source: Cainiu Health
Disease description:

I have recently developed white patches on my face for no apparent reason. The color is pale, and the surface is not red, swollen, or flaking. Why would these white patches appear?

Doctor's answer (1)
Dr. Liu Wenmin

The causes of white patches appearing on the face are multifaceted. Firstly, genetic factors may play a key role; if there is a family history of skin pigmentation disorders such as vitiligo, the likelihood of developing similar conditions may be relatively higher.

Secondly, dysfunction of the immune system can also lead to white patches on the face. When the immune system becomes disordered, it may attack the body's own melanocytes, reducing melanin production and resulting in white patches. Furthermore, prolonged exposure to certain chemical substances, such as harmful ingredients found in cosmetics or hair dyes, can irritate the skin and disrupt the normal function of melanocytes.

In addition,不良 lifestyles such as excessive mental stress and fatigue can affect the body's endocrine balance, thereby interfering with melanin production. Also, when the skin suffers trauma, melanocytes in the wounded area may be damaged, leading to localized white patches.

In daily life, it is advisable to pay attention to sun protection and skin care, avoiding the use of cosmetics or skincare products that might irritate the skin. If concerns arise, seek timely medical consultation for thorough examination and treatment.