Small Bumps on Chin After Acne. Put On Adapalene/BP/Accutane With No Luck?

I got acne on my chin 16 yrs old. I got antibiotics. It cleared me up. A year later I got bumps on my chin again but not squeezeable this time. My derm put me on Adapalene/BP for 3yrs without luck. Then 8mnths of Accutane(60mg). No luck. Then he said dry skin caused bumps. I moisturized madly. Still no luck. Now the condition is different. Before the bumps never disappeared, now they tend to dissappear totally when shave (then it looks like small scars or hollows) After 12hrs bumps pop out again

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