My son is about 13 years old and he is suffering with pimples and acne

A. hello dear nothing can we said without physical examination of the skin . acne and pimples are very common at teenage so proper medical examination is must . consult a good dermatologist for it . avoid self assumptions and self medication and avoid home remedies . keep the skin clean and make sure to avoid sweating as much as possible. follow a good skin care a regime.