Bed bug bites typically don’t require medical treatment. Washing the bites with soap and water, applying an anti-itch cream, and resisting the urge to scratch is enough for most people to heal without complications. The bites generally clear up on their own within one to two weeks.
Clean and Treat the Bites Right Away
Start by washing each bite with soap and water. This removes bacteria from the skin’s surface and reduces your risk of infection. Pat the area dry and apply one of these options to control itching and swelling:
- Hydrocortisone cream (sold as Cortaid and similar store brands) reduces inflammation and calms itching on contact.
- Calamine lotion creates a cooling layer over the bite that eases irritation as it dries.
- Oral antihistamine like diphenhydramine (Benadryl) helps when itching is widespread or keeping you awake at night.
A cold compress, such as a damp cloth or an ice pack wrapped in a towel, can also numb the area for temporary relief. Apply it for 10 to 15 minutes at a time.
Why Not Scratching Matters
The single most important thing you can do after treating bed bug bites is leave them alone. Scratching breaks the skin and gives bacteria, particularly staph and strep that live under your fingernails, a direct path into the tissue underneath. This can lead to cellulitis, a skin infection that spreads beyond the original bite.
Signs that a bite has become infected include redness that expands outward from the bite, warmth and swelling in the surrounding skin, pus or yellow drainage, and flu-like symptoms such as fever, chills, or swollen lymph nodes. If you notice any of these, contact a healthcare provider. One practical trick: use a washable marker to draw a border around the reddened area so you can track whether it’s growing.
Rare but Serious Allergic Reactions
Most people develop mild, itchy welts. Some people have no visible reaction at all. In rare cases, however, bed bug bites trigger anaphylaxis, a severe whole-body allergic reaction that can cause difficulty breathing, swelling of the face or throat, rapid heartbeat, and dizziness. This is a medical emergency requiring immediate treatment with epinephrine.
How to Tell if They’re Actually Bed Bug Bites
Bed bug bites are small, red bumps with a darker spot in the center. They tend to appear in lines or clusters, often on the upper body: neck, arms, shoulders, and face. This pattern helps distinguish them from flea bites, which are scattered and concentrated on the lower legs and ankles.
That said, bites alone are not reliable proof of bed bugs. The EPA notes that bed bug bites look similar to mosquito bites, chigger bites, eczema, and even hives. If you’re not sure what bit you, the best approach is to inspect your sleeping area for physical evidence rather than relying on the bites themselves.
Check Your Bed for Evidence
Treating your bites is only half the job. If bed bugs are the cause, the bites will keep coming until you address the source. Look for these signs in and around your mattress:
- Rusty or reddish stains on sheets or the mattress surface, left by crushed bugs.
- Tiny dark spots about the size of a pen tip, which is bed bug excrement. These often bleed into fabric like a marker.
- Pale yellow shells about 1mm long, shed by young bed bugs as they grow.
- Live bugs hiding in mattress seams, piping, tags, and cracks in the bed frame or headboard.
Bed bugs are roughly the width of a credit card’s edge, so they can fit into surprisingly tight spaces. Check any crack or crevice that could hold a credit card. If you confirm an infestation, contact a professional pest control company with bed bug experience. DIY treatments rarely eliminate them completely, and the bites will continue until the bugs are gone.
What to Expect During Healing
With proper care and no scratching, most bed bug bites fade within one to two weeks. The itching is usually worst in the first few days, then gradually subsides. Bites that were scratched open may take longer to heal and can leave temporary dark marks on the skin. Keeping the area clean and moisturized helps these marks fade faster. If bites persist or worsen after two weeks of home care, or if new bites keep appearing, that points to an ongoing infestation that needs professional attention.