Acne much worse and painful since starting roaccutane. Is this normal?

25 year old male. Been on roaccutane twice before in my teens with no issues. Spots have been kept under control since then but the last 8 months or so my skin has progressively got worse so went back on roaccutane. 17 days later although my face has been ok and is showing signs of improvement, my neck both front and back is covered in huge poison filled absesses and are beginning to leak. Extremely painful and can't turn my head. Any advice please?

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