Allergies after 60: signs, causes and when to see a doctor

Allergies after 60 remain common: in France, allergies affect about one person in three, according to Inserm, the national health research institute, and they do not stop with age. As we grow older, the body produces fewer IgE antibodies, but it keeps the ability to become sensitized to a new substance. After 60, medications and insect venoms become the leading triggers of severe reactions. Anaphylaxis at this age also more often occurs without hives on the skin, which delays diagnosis.

Allergies after 60: definition and what changes with age

Allergies are excessive immune reactions against a normally harmless substance, called an allergen: pollen, dust mites, a food, a medication or a venom. In the most common form, the body makes antibodies of the IgE type. They attach to mast cells, defense cells stationed in the skin and mucous membranes. On the next contact with the allergen, these cells release histamine within minutes.

Other allergies involve T lymphocytes and appear later, within 24 to 72 hours. Contact eczema caused by a fragrance or a metal is one example. In France, about a third of the population reacts to at least one allergen, and the NHS overview of allergies lists the most common culprits. Respiratory allergies have become three times more frequent in thirty years, and pollen allergies affect about 30% of adults.

With age, the immune system changes: this is called immunosenescence. In the European ECRHS cohort, 6,371 adults were tested twice, about nine years apart. Their total IgE fell by about 14%, while the proportion of people sensitized to dust mites, grasses or cats remained stable (Jarvis et al., 2005). In 559 German patients, IgE levels declined with age in those with rhinitis, asthma or insect allergy, but not in those with atopic eczema (Mediaty and Neuber, 2005).

Growing older therefore does not make you uniformly “less allergic”. Allergies present since childhood often persist, and a new sensitization remains possible at any age. Several reactions also look like an allergy without being one, as the following table shows.

Why allergies change after 60: the mechanisms

Five processes explain why allergies change after 60. Immune aging comes first, followed by the state of the body’s barriers, medications and the environment.

• Immunosenescence: the thymus produces fewer naive T lymphocytes, and a low-grade background inflammation sets in, known as inflammaging. Our article on thymus atrophy with age explains this process in detail.
• More fragile barriers: the skin dries out and the nasal lining thins. Irritants get through more easily, which favors non-allergic rhinitis and contact eczema.
• Polypharmacy: each added medication creates more opportunities for drug allergies. In an Italian allergy unit, 51.8% of older patients came in because of a reaction to a medication (Ventura et al., 2010).
• Cardiovascular cofactors: beta-blockers and angiotensin-converting enzyme (ACE) inhibitors lower the activation threshold of mast cells. In a German-speaking registry, taking both together was associated with more severe anaphylaxis (Nassiri et al., 2015).
• New exposures, a source of late-onset allergies: gardening in retirement, moving to a new home, a new pet. Between 1990 and 2018, North American pollen seasons grew 20 days longer and pollen concentrations rose by 21% (Anderegg et al., 2021).

In immediate allergies, the histamine released by mast cells causes most of the symptoms: itching, redness, runny nose, a drop in blood pressure. Its effects on the gut, skin and brain are explained in our article on histamine.

What the science says about allergies in older adults

Studies in older adults converge on three findings. Allergies remain common after 60. A large share of rhinitis cases at this age is not allergic. And anaphylaxis is more severe than before 65.

Allergies remain common after 60

In Poland, a survey examined 7,124 older adults with an average age of 67, using skin tests and IgE measurements. Atopy was suspected in 26.7% of them. Seasonal allergic rhinitis affected 12.6% of participants, the year-round form 17.1% and allergic asthma 5.9%. Grasses, dust mites and the mold Alternaria topped the list of allergens (Bozek and Jarzab, 2013).

A runny nose is not always a sign of allergies at this age, though. In a Korean cohort of 982 people aged 65 and over, 25.6% had rhinitis, a rate that stayed stable up to age 90. Only 17.2% were sensitized to an allergen, and this sensitization was not associated with rhinitis (Song et al., 2013). An American review estimates that nasal symptoms affect up to 32% of older people (Baptist and Nyenhuis, 2016).

Food allergies that can appear in adulthood

Food allergies are not just a childhood problem. A US survey of 40,443 adults put the share of convincing food allergies at 10.8%, while 19% of adults believed they had one. Among those affected, 48% had developed their allergy as adults and 51.1% had already had a severe reaction. Shellfish came first, affecting 2.9% of adults (Gupta et al., 2019). The gap between suspected and confirmed allergies argues for a proper assessment before any long-term food avoidance.

Anaphylaxis: more severe and more misleading

The European Anaphylaxis Registry compared 1,123 patients aged 65 and over with adults aged 18 to 64. In older adults, insect venoms were the leading trigger, followed by medications such as painkillers and antibiotics. Skin signs were less frequent (77%), and 51% of reactions reached grade III or IV. Loss of consciousness occurred in 33% of cases, and pre-existing cardiovascular disease was present in 59%. Overall, 60% of older patients were hospitalized, compared with 50% of younger ones (Aurich et al., 2019).

Of 2,458 deaths from anaphylaxis recorded in the United States between 1999 and 2010, medications caused 58.8% and venoms 15.2%. These deaths were associated with older age (Jerschow et al., 2014). Among 962 patients with bee or wasp venom allergies, 21.4% had had a severe reaction. Older age, male sex, wasp venom, a high tryptase level and taking an ACE inhibitor increased this risk (Ruëff et al., 2009).

In practice: 7 signs of allergies to recognize after 60

The signs of allergies after 60 are the same as at 30, but three pitfalls cloud the picture. Hives are more often missing during a severe reaction. Common diseases mimic allergies. Some medications alter the reaction or trigger one.

Blood pressure drug angioedema, a false allergy signal

Swelling of the lips or tongue without welts or itching should bring ACE inhibitors to mind, the blood pressure drugs whose names end in “-pril”. The mechanism involves bradykinin, not histamine, so antihistamines do not work. Among 195,192 US veterans starting an ACE inhibitor, 0.20% developed angioedema, a risk 3.56 times higher than with other blood pressure drugs. More than half of the cases occurred within the first 90 days, but the risk persisted beyond one year (Miller et al., 2008).

In the OCTAVE trial, conducted in 12,557 patients treated with enalapril, angioedema affected 0.68% of participants. Being over 65 multiplied the likelihood of angioedema by 1.6 (Kostis et al., 2005). The doctor then replaces the ACE inhibitor with another class of medication.

Chronic hives, rarely allergic

Welts that keep coming back for weeks rarely point to allergies. French estimates put chronic urticaria (long-lasting hives) at 2% of the population, most often driven by overly reactive skin mast cells, and the NHS likewise lists many non-allergic triggers of hives. Drug-induced hives with an allergic mechanism account for less than 5% of cases. These nuances matter for an aging immune system, whose cell-to-cell exchanges are at the heart of our pillar on altered intercellular communication.

Tips: 7 practical steps for managing allergies after 60

The most useful step after 60 is an accurate allergy record: which triggers, which reactions, which current medications. From a longevity perspective, it prevents both serious accidents and needless restrictions, whether of antibiotics or of foods.

• Write down every reaction: date, suspected food or medication, time to onset, photos of the welts or swelling.
• Keep an up-to-date list of all your medications, supplements included, and show it to every new prescriber.
• Have an old, poorly documented “penicillin allergy” label checked, because most are not confirmed.
• Discuss the choice of antihistamine with your doctor, because they are not all equal after 65.
• Never stop a beta-blocker or an ACE inhibitor on your own, even if you have a venom allergy.
• Ask whether desensitization is possible, including after 60.
• Carry the epinephrine auto-injector you have been prescribed, two of them, and check the expiration date.

Have a penicillin allergy re-evaluated

About 10% of Americans report a penicillin allergy, a share that is higher among older and hospitalized people. Yet fewer than 5% have a clinically significant hypersensitivity, and 80% of IgE-mediated allergies disappear within ten years. Cross-reactions with cephalosporins concern about 2% of cases (Shenoy et al., 2019). In the United Kingdom, 64,141 adults labeled as allergic were compared with 237,258 controls over an average of six years. Their risk of methicillin-resistant Staphylococcus aureus (MRSA) was multiplied by 1.69, and that of Clostridioides difficile by 1.26. The alternative antibiotics explained part of this excess risk (Blumenthal et al., 2018).

Choosing an antihistamine suited to your age

First-generation antihistamines, such as hydroxyzine or dexchlorpheniramine, have anticholinergic effects: drowsiness, confusion, constipation, urinary retention. The American Geriatrics Society’s 2023 Beers Criteria recommend avoiding them after 65. The French Laroche list (2007) also classifies anticholinergic antihistamines as potentially inappropriate medications after 75. One cohort followed 3,434 people aged 65 and over for an average of 7.3 years. High cumulative use of anticholinergic drugs was associated with a 54% higher risk of dementia, without proof of causation (Gray et al., 2015).

Beta-blockers, ACE inhibitors and desensitization

A European review judges the data on beta-blockers and ACE inhibitors too uncertain to justify stopping well-managed blood pressure treatment. It does, however, rank advanced age among the major risk factors for a severe reaction to stings. For these venom allergies, desensitization therefore remains fully worthwhile (Stoevesandt et al., 2020). For respiratory allergies, two small placebo-controlled Polish trials enrolled patients aged 60 to 75. After three years of sublingual dust mite treatment, nasal symptoms fell by 44%, compared with 6% on placebo, with no systemic reaction (Bozek et al., 2013). With grass pollen, the reduction reached 64% versus 7% (Bozek et al., 2014).

These two trials remain modest, with 111 and 78 participants at a single center. The overall aging of the body’s defenses, which also shapes the response to vaccines, is covered in our article on immunity after 60. To receive our research summaries on immune aging, sign up for our health newsletter.

Frequently asked questions about allergies after 60

Can you develop allergies after 60?

Yes. A new sensitization remains possible at any age, even though IgE levels fall over the years. In a US survey of 40,443 adults, 48% of people with a food allergy had developed it in adulthood. After 60, new reactions mainly involve medications, wasp or bee venom and certain foods such as shellfish.

Why do allergies seem to decrease with age?

The immune system produces fewer IgE antibodies as it ages. In the European ECRHS cohort, total IgE fell by about 14% over nine years. Hay fever symptoms therefore often ease. This decline is not uniform: it spares atopic eczema, and severe reactions to medications or stings remain possible, sometimes more severe than before.

What is the difference between an allergy and angioedema caused by a blood pressure drug?

An allergy releases histamine and often comes with itchy welts. Angioedema caused by angiotensin-converting enzyme inhibitors stems from excess bradykinin. The swelling of the lips, tongue or face then occurs without hives and does not respond to antihistamines. It affected 0.20% of the 195,192 US veterans followed on this treatment. Throat swelling means calling emergency services (911, 999 or 112).

When should you see a doctor about allergies after 60?

After any generalized reaction, even one that has cleared up: widespread hives, facial swelling, feeling faint or difficulty breathing after a meal, a medication or a sting. A consultation also helps check an old, poorly documented allergy, especially to penicillin, or discuss desensitization to venoms or pollens. In case of breathing distress or fainting, call emergency services first (911, 999 or 112).

Are antihistamines suitable for older adults?

Second-generation antihistamines, such as cetirizine, loratadine or bilastine, cause little drowsiness and are generally preferred. First-generation ones, such as hydroxyzine, have anticholinergic effects: confusion, constipation, urinary retention, risk of falls. American and French geriatric guidelines advise avoiding them in older adults. The choice is made with the doctor or pharmacist, depending on your other medications.

Is a penicillin allergy noted in your medical record permanent?

Not necessarily. About 10% of Americans report a penicillin allergy, but fewer than 5% have a confirmed hypersensitivity, and 80% of IgE-mediated allergies disappear within ten years. An allergy workup, with skin tests followed by a dose of amoxicillin under medical supervision, can often remove this label. Alternative antibiotics expose patients to more MRSA and Clostridioides difficile infections.