Symptoms such as hard lumps, swelling, redness, and itching after being bitten by small black insects may be a local allergic reaction or infection caused by the insect bite. This usually occurs after contact with certain insects, such as mosquitoes, fleas, or ticks.
If redness, swelling, a hard lump, and itching occur at the bite site, it could be an allergic reaction to the insect bite. This reaction usually appears within minutes to hours after the bite. Bacterial infection at the bite site can also cause redness, swelling, and pain. Infections are often accompanied by fever, pustules, or persistent pain. If symptoms worsen, are accompanied by high fever, or abscess formation, a more serious infection, such as cellulitis, should be considered, requiring immediate medical attention.
Patients must know that if they experience any of the above severe symptoms, they should seek medical help immediately. Avoid self-treatment or ignoring the symptoms, as this may worsen the infection or lead to other complications. For some people, insect bites can trigger severe allergic reactions, such as anaphylactic shock, which is an emergency requiring immediate medical intervention.
[Prevention Tips:]
1. Try to avoid staying in environments where insects are active for extended periods of time.
2. Use insect repellent, especially when outdoors.
3. Wear long-sleeved clothing and long pants to reduce skin exposure.
4. Regularly check your body, especially your reaction after being bitten, in order to detect any abnormalities in a timely manner.
