nemoci-sympt/DERMATOLOGIE/pigmentace-pokozky/chloasma-melasma/diferencialni-diagnostika

Differential diagnoses of melasma

• Freckles
• Solar lentigo
• Toxic melanodermia
• Riehl's melanosis
• Post-inflammatory hyperpigmentation
• Friction melanosis
• Ochronosis (endogenous and exogenous)
• Cutaneous erythematosus lupus [4]

• Phytophotodermatosis
• Pellagra
• Endogenous phototoxicity
• Nevus of Ota
• Café au lait macules
• Seborrheic keratosis
• Civatte's poikiloderma
• Acquired bilateral nevus of Ota-like macules (Hori's nevus)
• Periorbital hyperpigmentation
• Erythrose pigmentaire peribuccale of Brocq
• Erythromelanosis follicularis faciei
• Facial acanthosis nigricans
• Drug-induced pigmentation (e.g.: amiodarone)
• Actinic lichen planus [4]

• In patients with higher pigmentation
• Pigmentary demarcation lines (PDL) may confuse the diagnosis of melasma
• 79% of black women had at least one PDL [4]