mere bete ka nose block ho gya tha morning mein. Abhi evening mein Maine notice kiya ki uske nose bridge per brown patch jaise ho gya hai. plz help me to know why it happened and what it is. plz help

A. it is a hyper pigmentation. this type of pigmentation does not require any treatment andd may continue to persist on the skin. you have to take treatment and consult the doctor if it is increasing in size as well as number d