Underlying Skin Disease

Term: Underlying skin disease

Definition (plain English):
Chronic skin diseases that also affect the nails.

Exemplos:

• Psoríase
• Eczema / dermatitis
• Líquen plano

How it relates to nails:
Skin diseases often extend to the nail matrix and bed, causing pitting, ridging, splitting, thickening, or onycholysis (lifting).

Confusable with:
Fungal infections or nail trauma, which can produce very similar changes.

Disclaimer:
⚠️ This information is for educational purposes only. It is not a diagnosis. Always seek medical advice if you are concerned.