Symptom Definition

Weak and brittle nails can be caused by daily use of cleaning products or nail biting and are nothing to worry about. However, if weak nails are accompanied by other signs or symptoms such as weakness, headaches or dizziness, they may indicate health problems such as anaemia, nutritional deficiencies or hormonal changes.

Causes to be evaluated

• Hypothyroidism
• Anaemia
• Psoriasis
• Iron, vitamin, calcium or zinc deficiency