Bed bug bite treatment

There is no medicine that treats a bed bug bite specifically. The marks fade on their own over one to two weeks, and everything sold for them treats the itch while that happens: cold first, then hydrocortisone 1% or an oral antihistamine, and nails kept off the skin. The part that decides whether you are doing this again next week is not on the skin at all — bites keep coming until the room is dealt with, and no cream affects that.

The two halves of the problem

Searches for bed bug bite treatment are really two questions wearing one phrase, and the answers barely overlap.

Most of the disappointment with bed bug "treatment" comes from doing the first half well and the second half not at all.

Treating the bites

1. Wash the bites with soap and water. This is worth doing for a reason more specific than hygiene: the main complication of bed bug bites is a skin infection introduced by scratching, not anything the insect did.
2. Cold — a cold pack for about ten minutes, repeated as often as you like.
3. Hydrocortisone 1%, a thin film on the marks, up to seven days without medical advice.
4. An oral antihistamine rather than a cream when there are many bites — and bed bug bites usually come in numbers, which is exactly the case a tablet suits better than a tube.
5. Calamine over a wide area of itchy spots, as often as needed.

Do not scratch, and take that more seriously here than with a single mosquito bite. Bed bug itch runs longer, wakes people up, and covers more skin, so there is far more opportunity to break it open.

What does not need treating

Bed bugs are not known to transmit disease to people. That is the settled position of the public health agencies that track them, and it is the single most reassuring fact available: what you have is an itch, a laundry problem and an expense, not an infection risk from the insect itself.

Antibiotics are not needed for an ordinary bed bug bite, and neither is any specific antidote or "bed bug cream". Products marketed as one are the ordinary ingredients above, in a box that costs more.

When it is more than itch

• Signs of infection — spreading warmth, increasing pain after the second or third day, pus, a red streak running from a bite, fever. Scratched-open bites are the usual route in.
• Large blisters at the bite sites. A minority of people react strongly enough to blister, and it is worth having looked at rather than managed with more cream.
• A whole-body reaction — hives away from the bites, swelling of the lips, face or throat, wheeze or dizziness. Rare with bed bugs, and emergency care when it happens.
• Weeks of sleeplessness. Not a skin problem and not a trivial one; it is the effect people actually report as the worst of it, and it is a reason to escalate the room half of the problem rather than to endure it quietly.

The half that stops new bites

This is not medical advice, it is the part that decides whether the bites recur.

• Confirm it is bed bugs before spending anything. Bites alone do not prove it: reactions vary enormously, some people bitten in the same bed show nothing at all, and the marks are routinely confused with flea bites, scabies and ordinary skin conditions. Look for the physical evidence instead — small dark fecal spots on the mattress seams and bed frame, shed skins, live insects in the seams. What the bites and the evidence look like.
• Wash and tumble-dry bedding and affected clothing on the hottest setting the fabric allows, and give it a full drying cycle. The heat of the dryer does the work, not the wash.
• Do not move to the sofa or a spare room. It is the most common reaction and it spreads the infestation to a second room while the insects follow you.
• Do not use total-release foggers — "bug bombs". They do not reach into the seams and cracks bed bugs live in, they are a genuine fire and chemical hazard indoors, and they can drive the insects further into a property. This is the specific advice of the US Environmental Protection Agency, not a preference.
• Expect professional treatment to be needed and to take more than one visit. Widespread resistance to common insecticides is well documented, which is a large part of why home spraying so often fails after appearing to work.
• Mattress encasements trap what is already inside and make new arrivals easier to spot. They are a useful adjunct, not a treatment.

Why the bites appeared before you found anything

Marks can take days to develop after the bite that caused them, and people who have been bitten repeatedly tend to react faster and more strongly over time. So the night you notice is rarely the first night, and the number of marks is a poor guide to how long it has been going on. That is an argument for looking at the mattress rather than counting spots.