Acne typically appears on your face, forehead, chest, and upper back as these areas of skin have the most oil glands. There are certain things that may trigger or worsen acne.

Hormones, stress, and the menstrual cycle in women influence oil production. Diet and medicine also play a key role in triggering acne.

A diet that is high in sugar, as well as the consumption of milk, causes a high level of creating insulin. An increase in the level of insulin encourages the production of hormones that produce sebum, which can cause acne. 

Excessive sun exposure can cause pimples which end up as dark scars because the sun’s ultraviolet rays can increase inflammation and redness and create new breakouts.

Research states that cow’s milk can increase acne breakouts. Chocolates, Dairy products, bread, refined grains, and sugar cause acne breakout. High consumption of oily and fatty foods can also cause an increase in triggering acne. One should even avoid eating chips, fast food, pizza, and another high omega 6 acid food dishes. Avoid drinking soft drinks, alcohol, and beverages that can spike acne. Taking unprescribed medicines or food dishes one is allergic to can also cause acne. In such cases, always consult your doctor.

Stress and hormones are other reasons to trigger acne. The stress-related hormone called CRH is also known as a corticotrophin-releasing hormone. CRH binds with receptors in the skin’s sebaceous glands and that binding drives up more oil production which eventually causes acne.

In Women, acne triggers even before and during their menstruation cycle. Just before your period starts, estrogen and progesterone levels drop. This can trigger your sebaceous glands to secrete more sebum, an oily substance that lubricates your skin. Too much can result in clogged pores and breakouts. Hormones can also increase skin inflammation and the production of acne-causing bacteria.