Treatment for nail psoriasis usually involves using topical ointments, such as corticosteroids or vitamin D derivatives, under the guidance of a doctor, along with daily care to improve symptoms.

The specific type of ointment to use often depends on individual circumstances.

1. Corticosteroid ointments: These ointments help reduce inflammation and thickening of the skin around the nails and may help improve nail pitting and discoloration. When using them, pay attention to the course of treatment and dosage; long-term use should be under the guidance of a doctor.
2. Vitamin D derivative ointments: These ointments are often used to relieve skin patches and may be effective for psoriasis lesions affecting the nail root, helping to regulate skin cell growth.
3. Other topical ointments: Sometimes, doctors may recommend ointments containing ingredients such as salicylic acid to help soften the cuticles, depending on the specific condition of the nails.
In addition to medication, daily nail care is also important: keep nails trimmed and avoid injury; wear gloves when doing housework to reduce chemical irritation; and keep hands moisturized. Please consult a dermatologist for diagnosis and follow their advice regarding the selection and use of medications, and have regular follow-up appointments to adjust the care plan.