Diagnosis: Lichen planus
Description: Postinflammatory hyperpigmentation.
Morphology: Hyperpigmentation
Site: Face
Sex: M
Age: 45
Type: Clinical
Submitted By: Nameer Al-Sudany
Differential DiagnosisHistory: A middle aged man presented with a band-like linear deep purplish hyperpigmentation extended from the angle of the mouth to the angle of the mandible of more than one year duration.