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.
How To Get Rid Of Brown Spots On Skin. When skin is exposed to the sun, it causes an increase in the production of cells known as melanocytes that increase melanin in the skin, thus turning the skin darker. These dark skin patches are known as brown spots, age spots, dark spots, sun spots and liver spots. Brown spots generally appear on exposed skin areas like the face, back, neck, chest, shoulders and hands. Some of the main causes of brown spots are sun exposure, aging, and genetics.