Medical dermatology · Nails
Nail Disorders
Nail disorders include fungal infection, psoriasis, ingrown nails, brittle nails and pigmented streaks. A dermatologist diagnoses the cause, because a dark nail streak can rarely be melanoma.
Overview
Nails reflect skin and general health. Changes in colour, shape or growth deserve examination.
At a glance
Common problems
Onychomycosis, nail psoriasis, paronychia, ingrown toenail, longitudinal melanonychia.
Tests
KOH test, dermoscopy, nail biopsy.
Treatment
Depends on cause.
Frequently asked questions
Is a dark line in my nail dangerous?
Usually not, but it should be checked.
Why are my nails brittle?
Often water exposure or ageing; occasionally deficiency.
Can psoriasis affect nails?
Yes.
Related
Choose a specialist
Medical skin conditions need a dermatology specialist
Many Korean “skin clinics” focus on cosmetic procedures and may not treat skin disease. Board-certified dermatologists (피부과 전문의) are trained to diagnose and treat it, and medical dermatology is partly covered by Korea’s National Health Insurance. This page is general information, not medical advice.