Annoyed that your acne or pimples just won’t go away? You're not alone. This is one of the most common skin conditions that affects people the world over affecting their self-confidence and hence their personality. Dr Ruchi Agrawal a renowned dermatologist on our panel of experts explains why acne is caused along with tips to prevent it. Hormones - the real culprits? Though acne can affect a person anytime it is more prominent during certain phases in life (around puberty menopause) when the hormones are not in balance. Women with hormonal imbalance problems can also have acne which are resistant to