Hair loss on lower legs can have various causes, ranging in severity from 'needs attention' to 'very serious'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose hair loss on lower legs, we could:
Do you have less hair or a bald patch on the front/side area of your lower leg(s)?
Possible responses:→ No / don't know