Hives in Brampton: Understanding Sudden Itchy Welts

Hives tend to arrive without much warning. You might notice an itchy patch on your arm after lunch, and within an hour raised, pale or red welts have spread across your chest and back. Then, just as suddenly, some fade and new ones appear elsewhere. For many people, the experience is alarming the first time it happens, especially if there is no obvious cause.

Hives, known medically as urticaria, are very common. Many people will have at least one episode during their lifetime. Most cases are short-lived and harmless, though uncomfortable. In some people they last for weeks or months, and occasionally they are part of a more serious allergic reaction that needs emergency care.

This article explains what hives are, why they happen, how to manage them at home, which symptoms need urgent attention, and how the pharmacists at Pharmasave WestBram on Pertosa Drive can help.

What hives look like

Hives are raised, itchy welts on the skin, sometimes called wheals. Key features include:

• Raised bumps or patches, from tiny spots to large, joined-up areas
• Itching, sometimes intense, or a burning or stinging sensation
• Welts that change shape, move around and fade within hours, often within a day
• Blanching, where a welt turns pale briefly when pressed (on lighter skin)

On lighter skin, hives are often pink or red. On brown and Black skin, the welts may look skin-coloured, slightly darker or lighter than the surrounding skin, and redness can be hard to see. The raised texture and itch are often the more reliable clues.

Some people also experience swelling deeper in the skin, called angioedema, which often affects the lips, eyelids, hands, feet or genitals. It tends to feel more painful or tight than itchy.

Acute and chronic hives

Doctors usually divide hives into two groups based on how long they last.

Acute hives last less than six weeks. They are often triggered by something identifiable, such as an infection, a medication, a food or an insect sting, although in many cases no cause is found.

Chronic hives last six weeks or longer, appearing most days. In most people with chronic hives, no external trigger is found, and the immune system appears to be activating skin cells on its own. Chronic hives can be very disruptive, affecting sleep, work and mood, but effective treatments exist, and they often settle over time.

Living with chronic hives can be frustrating, partly because people naturally search for a cause and may cut out foods, change soaps or replace bedding without seeing a difference. In most chronic cases, food is not the culprit, and restrictive diets rarely help. A more useful approach is working with a doctor on a treatment plan that keeps symptoms under control day to day, while noting any physical triggers that seem to make flares worse. Stress, illness, alcohol and anti-inflammatory pain relievers can aggravate chronic hives in some people, even when they are not the underlying cause.

It is also worth acknowledging the toll on sleep and mood. Persistent itching at night can leave people exhausted at work or school. If chronic hives are affecting your quality of life, tell your doctor; there are additional treatment options for people whose hives do not respond to standard antihistamine use.

Common triggers

Possible triggers for acute hives include:

• Viral infections, such as colds, which are one of the most common causes, especially in children
• Medications, including some antibiotics, anti-inflammatory pain relievers like ibuprofen and naproxen, and ASA
• Foods, such as nuts, shellfish, fish, eggs, milk and some fruits
• Insect bites and stings
• Contact with latex, plants or animals
• Physical triggers, such as pressure, cold, heat, sweating, exercise, sunlight or scratching the skin

Physical hives are worth knowing about for active people. Some people develop hives when their body heats up from exercise or a hot shower, when stepping into cold air or water, or where a bag strap or tight waistband presses on the skin. Brampton’s cold winters and hot summers can both play a role for people with these patterns.

Hives or something else?

Several skin conditions can be confused with hives:

• Contact dermatitis tends to stay in place for days, often with dryness or scaling, rather than moving around within hours.
• Insect bites usually remain in place and may have a small central puncture.
• Eczema causes dry, scaly, itchy patches that persist.
• Drug rashes can look like hives but may also look like flat red spots that spread.

A helpful clue is timing. Individual hives typically come and go within 24 hours. A rash that stays in the same spot for days is probably something else. Taking photos of the rash when it is at its worst can be very helpful, since hives may have faded by the time you see a pharmacist or doctor.

Managing hives at home

For mild hives without other symptoms, home measures can help with comfort:

• Avoid known or suspected triggers.
• Apply cool compresses or take a cool shower to ease itching.
• Wear loose, soft clothing.
• Avoid hot showers, tight clothing and vigorous exercise while hives are active, if heat seems to make them worse.
• Try not to scratch, as this can worsen the itch and spread welts.

Non-sedating oral antihistamines are often the first treatment for hives. They block histamine, a chemical released in the skin that causes itching and welts. Several options are available without a prescription. Some older antihistamines cause drowsiness and can affect driving and work; newer ones are less likely to. Follow the directions on the label, and ask the pharmacist which product suits you, especially if you have other health conditions, take other medicines, or are pregnant or breastfeeding.

Topical creams and anti-itch lotions may offer some relief, but they tend to be less effective for hives than oral antihistamines because hives move around and involve histamine release beneath the skin.

When hives are an emergency

Hives can sometimes be part of anaphylaxis, a severe, life-threatening allergic reaction. Call 911 immediately if hives occur along with:

• Swelling of the tongue, lips or throat
• Difficulty breathing, wheezing or a hoarse voice
• Difficulty swallowing
• Dizziness, fainting or feeling faint
• Vomiting, severe abdominal pain or diarrhea after a food or sting
• A sense of doom or confusion

If you have been prescribed an epinephrine auto-injector, use it as directed and call 911. Epinephrine is the first-line treatment for anaphylaxis; antihistamines are not a substitute. After any episode of anaphylaxis, follow up with a doctor and, ideally, an allergist.

The Government of Canada’s information on food allergies explains how to recognise and respond to allergic reactions to food.

When to see a pharmacist or doctor

Ontario pharmacists can assess and, where appropriate, prescribe for insect bites and hives as part of the minor ailment program. The pharmacist will ask about your symptoms, possible triggers, how long the hives have lasted and any warning signs, then recommend a plan or refer you if needed. Learn more on our insect bites and hives page and the broader minor ailments page.

See a doctor if:

• Hives last more than a few days despite antihistamines
• Hives keep coming back or last six weeks or longer
• You have fever, joint pain or feel unwell along with hives
• Individual welts last more than a day or leave bruising
• You have frequent swelling of the lips or eyes
• You suspect a medication is the cause

For chronic hives, a doctor may adjust antihistamine treatment, order tests where appropriate, or refer you to a dermatologist or allergist.

Medications that can trigger hives

If you notice hives after starting a new medicine, do not stop a prescribed medication on your own, but contact your pharmacist or prescriber promptly. Anti-inflammatory pain relievers are a well-known trigger and can also worsen existing chronic hives in some people. Keep a record of any medicine you suspect, and make sure your pharmacy profile lists any drug allergies or reactions so the team can check future prescriptions. A medication review can be a good time to update this information.

Keeping a hives diary

If hives keep returning, a simple diary can help identify patterns. Note:

• Date and time hives appeared
• Foods eaten in the previous few hours
• Medicines taken, including over-the-counter products
• Activities, such as exercise or a hot shower
• Exposure to cold, heat, pressure or sun
• Illness, stress or menstrual cycle
• Photos of the rash

Bring the diary and photos to your appointment.

Ask Pharmasave WestBram about hives

Hives can be unsettling, but most cases are manageable with the right approach. If you are unsure whether an antihistamine is safe for you, or want help working out what triggered your hives, our pharmacists are glad to help.

Come by 100 Pertosa Drive, Brampton, ON L6X 0H9, or call (905) 454-5111 for advice. Find store details on the contact page, and request a minor ailment assessment through the booking page. For breathing difficulty or facial swelling, call 911 first.

This post provides general information about hives. It does not replace medical assessment. Seek emergency care for any signs of a severe allergic reaction, and speak with a pharmacist or physician about ongoing symptoms.