Share the knowledge Acquired Facial Hyperpigmentation Maturational dyschromia Melasma Exogenous ochronosis Lichen planus pigmentosus Riehl’s melanosis (pigmented contact dermatitis) Pigmentary demarcation lines Postinflammatory hyperpigmentation Facial acanthosis. Friction melanosis. Hori’s nevus. Addison disease. Postchikungunya pigmentation. Share the knowledge
