Pimples on the neck and scalp that do not improve can be due to an ongoing infection, blocked follicles, or irritation rather than a simple issue. Keep the area clean, avoid scratching, use gentle hair products, reduce sweating, and avoid heavy oils to prevent worsening. Do not continue antibiotics like Zifi on your own, as they may not fully treat the cause. If it is still not improving, consult a doctor to confirm the cause and guide the right treatment.