The surname Nguyen is believed to have originated in the Chinese surname Ruan (in the Mandarin language) or Yuen (Cantonese), owing to Chinaâs long domination over Vietnam.
Tinea nigra is a fungal infection that is mainly seen on the palms of the hands or soles of the feet causing a dark brown to black discoloration of the affected skin. The word tinea means a fungal infection and nigra means black.
Three skin conditions are likely to cause brown spots on the legs of a diabetic. In the condition called diabetic dermopathy, diabetes affects tiny blood vessels that supply a personâs skin with blood. Dermopathy most often appears as light brown, scaly patches on the front of a personâs legs, according to the Cleveland Clinic. These can be oval or circular and look similar to age spots. Acanthosis nigricans is another condition. It results in tan or brown raised areas.