Is it really acne? (photos)

I never had acne. I was diagnosed w/hypothyroidism am taking meds and had bumps on arms and a few in face and back. went to 2 derm.that gave me lots of meds n, Tretinoin, and spironolactone for 2 years, 100mg.the few bumps kept multiplying.hard and cut through the skin.These keep growing back. My husband thinks its clogged hair follicles.can't wear sleeveless shirt or even short sleeve, my arms are that horrific. had laser done on my arms, it made it worse.they became aggravated for weeks.

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