I got bitten by something a month ago on my arm, and it still itches... Intensely! Why? Should I be worried? No red raised skin any more, but my whole lower arm (below the bite mark) still itches through day and night... Sometimes goes away for a few hours, then comes back with a vengeance.
You have got an insect bite as your history suggests. For this you have to take some antibiotic preferably cap doxycycline 100 mg twice daily after meals for at-least 5 days with tab Exocet twice daily or tab Evil thrice daily after meals for itching with cap Gomez or cap Robson twice daily empty stomach. You also have to use clop-g or neobit-gm cream for local application. You also have to take tab bandy-plus 1 stat than after 7 days for 2 consecutive weeks. Avoid scratching of local part and apply Vaseline or coconut oil over it as it will reduce the severity of itching.