(Ramon Tomey) A celebrity dermatologist warned of a skin condition that stems from wearing face masks all day. Skin expert Dr. Dennis Gross said the condition called maskitis manifests as a dry and flaky rash. Gross added that maskitis is often mistaken with maskne, but he noted that symptoms and treatments for the two are different. Maskitis can spread across the face if it is left unchecked and not immediately addressed, he warned.