San Francisco Bay Area contains many airports.
Keratosis extremitatum progrediens may refer to  :. Diffuse nonepidermolytic palmoplantar keratoderma. Diffuse nonepidermolytic palmoplantar keratoderma. Diffuse nonepidermolytic palmoplantar keratoderma. Erythrokeratodermia variabilis. Erythrokeratodermia variabilis. Erythrokeratodermia variabilis. Category  : Palmoplantar keratodermas