Cockroaches

Overview

Cockroaches are insects that can live indoors, often in kitchens, bathrooms and cupboards. They are not a disease in themselves, but they can affect your health in two main ways. First, tiny bits of their saliva, droppings and shed skins get into the air and can trigger allergies and asthma, especially in children. Second, because they walk over food, dishes and surfaces, they can spread germs that cause stomach upsets. The good news is that cockroach problems can be fixed with a mix of good home habits and help from a pest control service.

Yes. Cockroaches are found in homes all over the world, in cities and in the countryside. They are especially common in flats and apartment blocks, shared buildings and older properties with pipes, cracks and shared rubbish areas.

Anyone can be affected, but some people are more likely to notice health effects. These include people with asthma or hay fever, young children, people living in crowded or older housing, and anyone who has trouble keeping a home clean because of illness, disability or low income.

Symptoms

Common symptoms

• Sneezing, a runny or blocked nose, and itchy eyes, especially when you are at home
• A cough or wheeze that seems worse in certain rooms or at night
• Itchy skin, a rash or hives after touching infested surfaces
• Stomach cramps, feeling sick or loose stools after eating food that pests may have walked on
• Finding droppings, egg cases or shed skins in cupboards, behind appliances or under sinks
• A musty, oily smell in the kitchen or bathroom

Symptoms in children

• Wheezing or a night-time cough that keeps waking them up
• More frequent asthma flare-ups, especially in children living in older or damp housing
• Itchy skin or flare-ups of eczema
• A constantly runny nose or blocked nose at home that improves when they are away
• Tummy aches or loose stools that come and go

Symptoms in older adults

• Wheezing or breathlessness that feels worse than usual, particularly if you already have asthma or a long-term lung condition
• More chest infections or a cough that lingers
• Skin irritation or itching that is hard to settle
• Trouble keeping the home as clean as you would like because of mobility or health problems
• Poor sleep and low energy caused by ongoing allergy symptoms

Causes

Main causes

• Cockroaches coming into the home looking for food, water and warmth
• Food left out, crumbs, pet food and unwashed dishes
• Damp areas and dripping pipes or taps that give them water
• Cracks, gaps around pipes, vents and skirting boards where they can hide and travel
• Cardboard boxes, bags and second-hand furniture or appliances brought into the home
• Shared walls, drains and rubbish areas in blocks of flats, which let them move between homes

Risk factors

• Living in a flat, shared building or older property with shared pipes and rubbish areas
• Warm, humid climates or well-heated, damp homes
• Clutter that gives pests places to hide
• Having asthma, eczema or hay fever, which makes allergy symptoms more likely
• Living in crowded housing or having limited time, energy or money for home maintenance
• Nearby building work, drains or rubbish collections that disturb pests

When to see a doctor

See a doctor urgently if:

• Breathing problems that are getting worse or not responding to your usual inhaler
• A child with a persistent night cough or wheeze
• Diarrhoea or vomiting that will not settle, or signs of dehydration
• A skin infection — spreading redness, pain, heat, or pus
• Any severe allergic reaction

Book a routine appointment if:

• Allergy-type symptoms at home that keep coming back, such as sneezing, itchy eyes or a runny nose
• Asthma that seems harder to control than usual
• Repeated stomach upsets with no clear cause
• You want advice on allergy testing or on managing asthma triggers at home
• You are struggling to keep on top of cleaning because of your health and want support

Diagnosis

There is no single test for a cockroach problem. Your doctor will ask about your symptoms, your home and whether you have seen pests or droppings. If your symptoms suggest an allergy, they may arrange allergy testing. Pest control services, not doctors, confirm whether cockroaches are present in your home, usually by inspecting likely hiding places.

Tests that may be done

• A skin prick test, where a tiny amount of allergen is placed on the skin to see if it reacts
• A blood test to check for allergy to cockroach proteins
• Lung function tests, such as blowing into a spirometer, if asthma is suspected
• A stool sample if diarrhoea keeps returning
• A home inspection by a pest control professional

What to expect at your appointment

Most appointments are short and simple. Your doctor will listen, ask questions and may suggest allergy tests, which are usually done at a clinic or hospital. Results can take a week or two. In the meantime, you can start on practical steps at home, and your doctor can help ease symptoms such as a cough, wheeze or itchy skin.

Treatment

Treatment has two parts: dealing with the pests and treating your symptoms. Removing the cockroaches is the most important step — allergy and asthma symptoms usually improve once they are gone. Alongside that, your doctor can help control allergy, asthma or stomach symptoms while the infestation is sorted out.

Self-care at home

• Clean up crumbs and food spills straight away and wash dishes before bed
• Store food in sealed containers and keep pet food off the floor
• Take rubbish out daily and keep bins closed and clean
• Fix dripping taps and leaking pipes, and dry damp areas
• Clear clutter, especially cardboard boxes and old papers, from kitchens and cupboards
• Wipe surfaces before preparing food and wash hands before eating
• Seal cracks and gaps around pipes and skirting boards
• Contact your landlord or building management if you rent or live in a shared building

Medical treatments

Your doctor or pharmacist can suggest treatments to ease symptoms based on what is bothering you. These may include allergy relief for sneezing and itchy eyes, inhalers to control asthma, or creams for itchy skin. Your clinician will choose what suits you, taking into account your age, other health conditions and other medicines you take. Always ask before starting anything new, including over-the-counter products. If symptoms are severe or ongoing, your doctor may refer you to an allergy or respiratory specialist.

When is surgery considered?

Surgery is not used to treat cockroach-related allergies or infestations.

Living with this condition

Living with a cockroach problem can feel wearing, but small daily habits make a real difference. Wiping surfaces, sealing food away and taking the rubbish out each evening quickly become routine. Keep a note of when symptoms are worst — this can help you spot problem areas and show your doctor how things are going.

Lifestyle tips

• Keep a simple cleaning routine rather than occasional deep cleans
• Reduce damp by opening windows or using extractor fans when cooking and bathing
• Avoid bringing cardboard boxes or second-hand soft furniture into the home without checking it
• Keep bedding and soft furnishings washed regularly if allergies are a problem
• Ask your local council or housing provider about pest control support
• Tell your doctor if stress or low mood is making it hard to manage at home

Diet and exercise

There is no special diet for cockroach allergies, but eating a varied, balanced diet and staying active help your general health and support your immune system. If stomach upsets are a problem, keep drinking fluids and eat plain foods until you feel better. If exercise makes you wheeze, mention it to your doctor — it may mean your asthma needs a review, not that you should stop moving.

Mental health and emotional wellbeing

It is very common to feel embarrassed, anxious or angry about pests in the home. Some people feel ashamed to invite others over, or lose sleep because of worry and night-time coughing. These feelings are understandable and worth mentioning to your doctor. If you feel overwhelmed, low or unable to cope, please contact your local crisis support service or speak to a healthcare professional — you do not have to manage alone.

Prevention

Mostly, yes. While you cannot control what comes in from neighbouring homes, keeping food sealed, fixing leaks, reducing clutter and sealing gaps make your home much less inviting. If you live in a shared building, prevention works best when everyone, and the building owner, takes part.

Screening programmes

There is no routine screening for cockroach-related health problems. If you have asthma, your regular asthma reviews are a good chance to mention triggers at home. If you have repeated allergy symptoms, ask your doctor whether allergy testing would be useful.

Complications

If left untreated

• Ongoing allergy symptoms such as a constantly runny nose, itchy eyes and poor sleep
• Poorly controlled asthma, with more flare-ups and more time off school or work
• Repeated stomach upsets from food contamination
• Skin infections caused by scratching itchy rashes
• Stress, embarrassment and low mood affecting daily life
• The infestation spreading to other rooms or neighbouring homes

Long-term outlook

The outlook is good. Cockroach problems can be brought under control, and for most people allergy and asthma symptoms improve once the pests are gone. It can take a few weeks and sometimes more than one round of pest treatment, so try to be patient with yourself. If symptoms continue after your home is clear, your doctor can look at other triggers and help you find a treatment plan that works.

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