I got a bad scrape when at the beach, i treated it with neosporin and two days later i got a rash around it stings and itches and won't go away.

Sea germs are unique: Wounds that get infected from seawater often involve germs not usually encountered otherwise. A skin eruption around such a wound may need special antibiotics. On the other hand, reactions to Neosporin are common and this might be the cause. A healthcare provider can help. Best way to prevent wound infections is washing them out well with soap and water.