What's the cause? (Professional advice)

[Rhettm]

Hello im a college student and i have pimples that grow as large as m&m's. Since im worried about it I went to a dermatologist and prescribed me acnetrex (isotretinoin, capsule) for 8 months (its from the leaflet). So it really worked. But after the 10th month pimples started ruining and carving my face again. Here are my suspects from what I have read on some pages:
Stresstabs
Peanuts

What are the causes? And how to permanently seal my past of acnes. Im really worried again and well, im always teased.

Thanks in advance

[niceskin]

There's a number of factors that might be causing your acne. Stress and some nuts can definitely trigger and in some cases, even worsen your acne. A friend of mine recently used BlemishLess and got rid of her acne in 6 months. I've had other friends with acne, but I'd say hers was the worse and she had the greatest improvement. You should also try to control your sugar intake as well as the foods you consume.

[hemantlatawa]

Reasons can be stress,humidity and climate,season changes,cosmetics,menstrual cycle,pregnancy,season changes etc.

[kevinkrieger]

I think it is the puberty, your body is changing . I would say get the face wash for your particular skin type and drink plenty of water. Other causes may be constipation , late nights , hormonal imbalance.