Flea bites can be dangerous to humans primarily because they may transmit serious diseases such as typhus, cat scratch disease (caused by Bartonella henselae), and flea-borne spotted fever (Rickettsia felis infection). While flea bites usually cause mild symptoms like itching, redness, and small bumps, complications can include allergic reactions, secondary skin infections, and in rare cases, more serious illness resulting from disease transmission. Some individuals may experience severe allergic reactions requiring medical attention. Overall, flea bites are more than just an irritation and can pose health risks if not properly managed.
Common Symptoms and Reactions
- Red, itchy bumps often clustered on the legs, ankles, or feet
- Itching, swelling, rash, or hives
- Severe allergic reactions can cause difficulty breathing, swelling of lips or tongue, or dizziness
- Secondary infections from scratching
Diseases Transmitted by Fleas
- Typhus (caused by Rickettsia typhi)
- Cat scratch disease (Bartonella henselae)
- Fleaborne spotted fever (Rickettsia felis)
- Tapeworm infections in rare cases
When to Seek Medical Attention
- Signs of infection (pus, swelling, warmth)
- Severe allergic reactions (difficulty breathing, swelling)
- Flu-like symptoms after flea bites (fever, headache, muscle pain)
Maintaining flea control on pets and in living environments helps prevent infestations and reduces the risk of flea bites and associated diseases.