Acne or  pimples... Due to hormonal changes..Oily skin causes it...Common in adolescent age...May occur in adults also.. Food like Oily foods, ice cream, chocolate and sweets increase it.. Treatment depends on the grade of pimples or acne..So, please  send photos by direct online consultation as it's a must to see which grade of pimples or acne for accurate diagnosis and treatment.

Require images and history. And also start appropriate treatment so that he can be treated in early stage or else he may end up getting  scars ..Please consult online

Your son must be entering into teenage and this is the time for has pimples Reduce chocolates cold drinks ice creams Kurkure chips sweets fast foods and cakes Exercise regularly Wash face twice daily As per his symptoms he needs a consultation within dermatologist because is acne grade might be severe

Acne treatment depends on various factors like age, skin type, type of acne , severity etc . Please do video consultation for proper diagnosis and treatment