What causes nails to become uneven or bumpy?

Under normal circumstances, uneven or irregular nail surfaces may be caused by factors such as aging, malnutrition, onychomycosis, eczema, or psoriasis. If discomfort occurs, it is recommended to seek medical attention promptly. Specific causes are analyzed as follows:

1. Aging

With advancing age, nail growth slows down, and nails become brittle and more prone to developing an uneven surface. It is important to routinely maintain proper nail trimming, avoiding cutting them too short or tearing the nails.

2. Malnutrition

Malnutrition can impair the synthesis of proteins and keratinocytes in the nail plate, reducing its strength and resilience, leading to cracks and unevenness. It is advisable to consume foods rich in iron, zinc, and B vitamins, such as red meat, legumes, nuts, and leafy green vegetables.

3. Onychomycosis (Fungal Nail Infection)

Onychomycosis is usually caused by dermatophyte infection, resulting in nail deformity, thickening, and an uneven surface. Symptoms may include discoloration, crumbling, or even nail loss. Under a doctor's guidance, patients may use medications such as griseofulvin tablets, compound ketoconazole cream, or itraconazole capsules for treatment.

4. Eczema

Eczema may be associated with dry environments. The inflammation caused by eczema can damage the skin around the nails, leading to uneven nail surfaces, often accompanied by itching. Patients should follow medical advice and use medications such as calamine lotion, zinc oxide oil, or tacrolimus ointment.

5. Psoriasis

Psoriasis may be related to genetic factors and can disrupt the normal differentiation process of keratinocytes, causing an uneven nail surface. It may also be accompanied by symptoms such as joint pain, red patches, and scaling. Under a doctor’s recommendation, patients may use medications such as methotrexate tablets, Xioyin granules, or compound glycyrrhizin tablets for treatment.

In daily life, it is important to maintain a balanced diet, use moisturizing hand creams or nail polishes to enhance nail elasticity and shine, avoid exposure to allergens, and keep hands clean and dry.