What should I do if the area where the fingernail connects to the finger has split open?

Under normal circumstances, split skin at the junction between the fingernail and fingertip can be managed through methods such as gentle cleansing and protection, moisturizing and repair, medication, dietary adjustments, and daily preventive care. A detailed analysis is as follows:

1. Cleansing and Protection

Gently rinse the split area with warm water to remove surface dirt and prevent bacterial residue that could lead to infection. After rinsing, gently pat dry with sterile gauze or a clean towel—do not rub vigorously. If the crack is deep, apply iodine tincture for disinfection and cover it lightly with a breathable bandage to protect the wound from external forces that might worsen the injury.

2. Moisturizing and Repair

Apply medical-grade petroleum jelly, vitamin E ointment, or specialized hand cream immediately after cleaning. These products form a protective barrier on the skin’s surface, reduce moisture loss, relieve dryness, and create a moist environment conducive to wound healing. Pay special attention to moisturizing after handwashing and before bedtime to promote restoration of the skin barrier.

3. Medication

If the cracked area becomes red, swollen, or painful, topical mupirocin ointment may be used under medical guidance to prevent infection. If the condition is caused by an allergic reaction, hydrocortisone butyrate cream can be applied externally; in cases of significant itching, oral loratadine hydrochloride capsules may be taken as directed. All medications should be used only under professional supervision to ensure safety and effectiveness.

4. Dietary Adjustment

Incorporate foods rich in vitamins A and E and protein into your diet, such as carrots, nuts, eggs, and milk. These nutrients enhance skin elasticity and regenerative capacity, improving skin health from within and reducing the likelihood of recurring cracks.

5. Daily Protection

Always wear gloves when handling irritants such as detergents or disinfectants. Avoid tearing off hangnails with your fingers, and do not cut your nails too short—maintain a moderate length. Individuals with underlying conditions such as hyperthyroidism or hypothyroidism should pay extra attention to hand skin care.

Additionally, if the crack fails to heal over time, involves severe bleeding, or shows signs of pus or infection, seek medical attention promptly. Follow your doctor's instructions regarding medication during treatment. If symptoms continue to worsen, schedule a follow-up appointment immediately to adjust the treatment plan.