Itchy skin turns black after scratching.
Apr 24, 2022
Source: Cainiu Health
Dr. Gan Liqiang
Introduction
After pruritus develops on a patient’s skin, scratching the affected area with the hands may lead to localized post-inflammatory hyperpigmentation, resulting in darkening of the skin. Once this occurs, treatment under a physician’s guidance—such as topical application of vitamin E capsules—is often recommended. This approach helps fade the hyperpigmentation and thereby improves the condition.
Skin itching followed by darkening of the affected area may result from post-inflammatory hyperpigmentation, or it could be caused by a skin allergy. A definitive diagnosis requires evaluation by a dermatologist at a hospital. When experiencing pruritus (itching), avoid excessive scratching, as hands often carry bacteria that may lead to secondary infection. Why does the skin turn black after scratching?
Why does the skin turn black after scratching?
Post-inflammatory hyperpigmentation: When patients experience pruritus and subsequently scratch the affected skin, localized melanin deposition may occur, leading to darkening of the skin. In such cases, vitamin E capsules—applied topically under medical supervision—may help fade the hyperpigmentation and promote improvement. If topical treatments fail to lighten the pigmentation, laser therapy may be recommended following consultation with a dermatologist.
Allergic dermatitis: Skin allergies commonly cause pruritus, prompting patients to scratch the affected area, which may leave behind dark marks. Treatment involves antihistamines—such as oral loratadine or cetirizine—prescribed and monitored by a physician. During treatment, allergen identification is essential; once identified, appropriate pharmacotherapy should be initiated alongside strict avoidance of the triggering allergen to prevent symptom recurrence.
During recovery, increase intake of fruits and vegetables rich in vitamins. We hope this information is helpful to you.
