What causes dark spots on the face?

Generally, the appearance of dark spots on the face may be caused by factors such as aging, ultraviolet (UV) radiation, contact dermatitis, endocrine disorders, or iron-deficiency anemia. It is recommended to seek medical advice promptly, identify the underlying cause, and receive appropriate treatment under a doctor's guidance. Specific causes are analyzed as follows:

1. Aging: As people age, melanin deposition in the skin tends to increase, which may lead to dark spots on the face. This is a normal physiological phenomenon that does not require special treatment, but attention should be paid to maintaining proper skin hygiene.

2. UV Radiation: Prolonged exposure to ultraviolet rays—especially without adequate sun protection—can stimulate the skin to produce excess melanin, resulting in dark spots. Daily sun protection measures should be taken, such as applying sunscreen and using umbrellas when outdoors, to minimize UV exposure.

3. Contact Dermatitis: This is an inflammatory skin condition triggered by contact with external substances. If not treated promptly, the inflammatory response may increase melanin deposition, leading to dark spots, often accompanied by symptoms like swelling and papules. Patients may use medications such as calamine lotion, mupirocin ointment, or compound dexamethasone cream as directed by a physician.

4. Endocrine Imbalance: Long-term sleep deprivation, insufficient sleep, or excessive mental stress may disrupt endocrine function, causing hormonal fluctuations and increased melanin production, which can result in facial dark spots. Other associated symptoms may include acne and dull-looking skin. Medications such as Jingxin Oral Liquid, Yimucao Granules, or Bromocriptine Mesylate Tablets may be used under medical supervision to regulate hormonal balance.

5. Iron-Deficiency Anemia: This type of anemia results from insufficient iron in the body. Due to iron deficiency, skin quality may deteriorate, becoming darker or developing dark spots, particularly on the face. Common accompanying symptoms include pallor and fatigue. Treatment options include iron dextran injection, compound ferrous sulfate granules, or iron dextran tablets, used as prescribed by a doctor.

In daily life, proper skin cleansing and care are essential. Avoid using skincare products or cosmetics with strong irritants, and opt for gentle, non-irritating formulations.