What is urticaria?
Urticaria is the medical term for hives.
It is a mast-cell-driven skin condition that can produce:
- Raised swellings called wheals
- Intense itching
- Burning or stinging
- Temporary skin discolouration
- Angioedema
- Repeated flare-ups
A single hive usually disappears within 24 hours, although new hives may continue appearing elsewhere.
What is acute urticaria?
Acute urticaria means that the episodes have been present for less than six weeks.
Possible triggers include:
- Viral or bacterial infection
- A medicine
- An insect bite or sting
- A food allergy
- Latex
- A recent medical treatment
- An unidentified immune reaction
Many acute episodes settle within days or weeks. The trigger may remain unknown even after the rash clears.
What is chronic urticaria?
Chronic urticaria means that hives or angioedema continue recurring for six weeks or longer.
The episodes may occur:
- Every day
- On most days
- Several times each week
- With symptom-free intervals
- For months or occasionally longer
Chronic urticaria can significantly affect sleep, concentration, work, school and emotional wellbeing.
What is chronic spontaneous urticaria?
Chronic spontaneous urticaria, or CSU, causes recurrent wheals, angioedema or both without a consistently identifiable external trigger.
“Spontaneous” means that the hives appear without a predictable physical stimulus. It does not mean that the symptoms are imagined or caused solely by anxiety.
A definite cause is often not found, but effective symptom control is still possible.
What is chronic inducible urticaria?
Chronic inducible urticaria is triggered predictably by a physical or environmental stimulus.
Possible forms include:
- Dermatographism after scratching or rubbing
- Pressure urticaria
- Cold urticaria
- Heat urticaria
- Cholinergic urticaria after heat or sweating
- Solar urticaria after sunlight
- Contact urticaria
- Vibratory urticaria
- Water-related urticaria
The timing, distribution and threshold of the reaction help identify the subtype.
What is dermatographism?
Dermatographism means “writing on the skin.”
A raised itchy line develops after the skin is:
- Scratched
- Rubbed
- Stroked
- Pressed by clothing
- Touched by a bag strap
The swelling usually follows the path of the pressure or scratching and often settles within a relatively short time.
What is pressure urticaria?
Pressure urticaria develops after sustained pressure on the skin.
Possible triggers include:
- Tight clothing
- Belts
- Bag straps
- Sitting on a hard surface
- Prolonged standing
- Carrying heavy objects
- Tight footwear
Swelling can develop immediately or several hours after the pressure and may last longer than ordinary hives.
What is cold urticaria?
Cold urticaria causes wheals, swelling or systemic symptoms after exposure to:
- Cold air
- Cold water
- Ice
- Chilled objects
- Cold drinks or food
Sudden whole-body exposure—such as swimming in cold water—can occasionally cause severe dizziness, fainting, throat swelling or breathing difficulty. Patients with suspected cold urticaria should be assessed before deliberately testing themselves in cold water.
Types, options and detailed guidance
What do hives look like?
Hives may appear as:
- Small raised bumps
- Large swollen patches
- Rings
- Irregular map-like shapes
- Lines after scratching
- Several wheals joining together
- Swellings that move from one area to another
They may be intensely itchy, warm, burning or stinging. Individual lesions usually flatten without leaving a permanent mark.
How do hives appear on Indian skin?
On lighter skin, hives often appear pink or red.
On medium-to-deep Indian skin tones, they may appear:
- Similar to the surrounding skin
- Purple
- Grey
- Dark brown
- More swollen than visibly red
The border and elevation may be easier to feel than see. Lighting from the side can sometimes make the raised areas more obvious.
Is urticaria contagious?
No. Urticaria is not contagious.
It cannot spread through:
- Touching
- Towels
- Clothing
- Food
- Kissing
- Sexual contact
- Living in the same household
An infection can sometimes trigger hives, but the hives themselves do not pass from one person to another.
Is chronic spontaneous urticaria a food allergy?
Usually not.
A true food allergy generally produces symptoms in a consistent time relationship after eating the responsible food and may also cause:
- Mouth or throat itching
- Vomiting
- Breathing difficulty
- Dizziness
- Swelling
- Anaphylaxis
Chronic spontaneous urticaria commonly continues without a repeatable relationship to one particular food. Routine food-allergy panels are therefore not usually helpful unless the history clearly points towards a specific food.
What is cholinergic urticaria?
Cholinergic urticaria commonly produces many small itchy wheals after the body temperature rises.
Possible triggers include:
- Exercise
- Hot showers
- Sweating
- Fever
- Emotional stress
- Spicy food
- Hot weather
The rash often begins on the upper trunk or neck and may spread. Diagnosis depends on the relationship between symptoms and the temperature-raising trigger.
What is angioedema?
Angioedema is deeper swelling beneath the skin.
It commonly affects:
- Eyelids
- Lips
- Face
- Hands
- Feet
- Genitals
- Tongue
- Throat
Angioedema may occur with hives or on its own. Swelling involving the mouth, tongue or throat can become a medical emergency.
When are hives an emergency?
Go to the nearest emergency department immediately when hives or swelling are accompanied by:
- Difficulty breathing
- Wheezing
- Difficulty swallowing
- Swelling of the tongue or throat
- Sudden mouth or lip swelling with breathing symptoms
- Feeling faint or light-headed
- Confusion
- A racing heartbeat
- Collapse
- Repeated vomiting with a suspected allergic reaction
These symptoms can indicate anaphylaxis or dangerous airway swelling. Do not wait for a routine clinic appointment.
Important: Aastha Skin Centre’s phone and WhatsApp numbers are not emergency-service numbers.
Additional care and practical advice
Does angioedema always mean an allergy?
No.
Angioedema may occur because of:
- Histamine-related urticaria
- A medicine
- An allergic reaction
- An inherited condition
- An acquired complement-related condition
- An ACE-inhibitor blood-pressure medicine
- An unidentified cause
Angioedema occurring repeatedly without hives needs careful assessment because it may follow a different biological pathway and may not respond to ordinary antihistamine treatment.
Which medicines can trigger or worsen hives?
Possible medicine-related triggers include:
- Antibiotics
- Non-steroidal anti-inflammatory drugs
- Aspirin
- Some painkillers
- Contrast agents
- Certain blood-pressure medicines
- Supplements
- Herbal products
A medicine may trigger acute urticaria or worsen established chronic urticaria.
Patients should not stop a prescribed medicine independently. Bring a complete list of prescription drugs, non-prescription medicines, vitamins and supplements to the consultation.
Acute and chronic hives assessed separately
The consultation determines whether symptoms are short-lived, chronic spontaneous or related to a physical trigger.
Angioedema and emergency history reviewed
Lip, eyelid, tongue or throat swelling is documented so that risk and emergency planning can be discussed.
Focused investigation
Testing is selected according to the history rather than automatically ordering extensive allergy panels.
Stepwise treatment planning
The plan may progress from regular non-sedating antihistamines to advanced treatment when symptoms remain uncontrolled.
Support for Indian skin tones
Hives may be skin-coloured, grey, purple or brown rather than bright red, and diagnosis is based on elevation, timing and symptoms as well as colour.
Additional cost depends on:
- Acute or chronic urticaria
- Antihistamine treatment
- Blood tests
- Targeted allergy testing
- Skin biopsy
- Investigation of angioedema
- Injectable biologic treatment
- Monitoring for systemic medicine
- Emergency-care requirements
- Follow-up after the included 10-day period
Most patients do not require every available test. Investigations are selected after the history and rash pattern have been reviewed.
How care is planned
- Assessment comes before treatment selection.
- Options, limitations, aftercare and expected timelines are explained.
- The plan is adapted to diagnosis, skin type and medical history.
Choose a clinic in Jammu
Karan Nagar
Lane 2, Karan Nagar, near Amphalla Chowk, Jammu – 180005Doctor consultation:
Mon–Sat 11:00 AM–4:00 PM
Sun 11:00 AM–3:00 PM
Paloura Chowk
Top Paloura, opposite Government Senior Secondary School, Jammu – 181121Doctor consultation:
Mon–Sat 6:00 PM–8:00 PM
Sun 10:30 AM–12:00 PM
Frequently asked questions
Can infection trigger hives?
Yes.
Acute hives can occur alongside or shortly after:
- Viral respiratory infection
- Sore throat
- Urinary infection
- Gastrointestinal infection
- Another immune-activating illness
The infection may be the trigger even when no food or medicine allergy is present. Treatment depends on whether the infection itself requires medical care.
Can stress cause urticaria?
Stress can trigger or worsen flare-ups in some patients, but chronic urticaria is not simply a psychological problem.
The condition involves mast cells, histamine and immune pathways. Stress management may reduce one aggravating factor, but it does not replace medical treatment.
How does Dr. Cheena Langer diagnose urticaria?
A consultation may include:
- Reviewing when the episodes began
- Checking how long each individual wheal lasts
- Asking whether the rash moves to different areas
- Reviewing angioedema or breathing symptoms
- Examining photographs from earlier episodes
- Reviewing medicines and supplements
- Asking about infections and recent illness
- Identifying cold, heat, pressure or exercise triggers
- Reviewing foods only when the timing suggests allergy
- Assessing the effect on sleep and daily life
- Considering limited laboratory tests
- Considering provocation testing or skin biopsy when indicated
Hives are often diagnosed through history and examination. Finding the exact cause can take time, and in chronic spontaneous urticaria no external trigger may be identified.
What should patients bring to the consultation?
Helpful information includes:
- Clear photographs of the rash
- Approximate start and end time of each episode
- A list of current medicines
- Recent antibiotics or painkillers
- Supplements and herbal products
- Details of swelling episodes
- Information about breathing or faintness
- Suspected physical triggers
- Previous blood or allergy tests
- Emergency-treatment records
- A symptom diary
Hives may disappear before the appointment, so photographs can be particularly useful.
Does everyone with chronic hives need extensive allergy testing?
No.
Current guidance recommends a focused history, examination and limited diagnostic work-up rather than broad screening tests for every patient. Additional tests are selected when symptoms or history suggest a specific allergy, infection, autoimmune condition, thyroid disorder, inflammation or another diagnosis.
Large food panels can produce confusing positive results that do not prove the food is causing the hives.
Which tests may be considered?
Depending on the presentation, Dr. Cheena Langer may consider:
- Complete blood count
- Inflammatory markers
- Thyroid-related tests
- Liver or kidney tests
- Infection-related tests
- A targeted allergy test
- Provocation testing for physical urticaria
- Skin biopsy
- Complement-related tests for angioedema without hives
Tests are selected according to the history rather than ordered as an automatic “complete allergy package.”
When might a skin biopsy be needed?
Ordinary hives usually disappear from one spot within 24 hours.
A biopsy or additional investigation may be considered when individual lesions:
- Remain fixed for longer than 24 hours
- Are more painful or burning than itchy
- Leave bruising
- Leave purple spots
- Leave persistent pigmentation
- Occur with fever
- Occur with joint pain
- Occur with abdominal or kidney symptoms
These features can suggest urticarial vasculitis or another urticaria-like condition rather than ordinary hives.
Get a clear plan for urticaria & hives
Request a consultation with Dr. Cheena Langer at Karan Nagar or Paloura Chowk.
Medical disclaimer: Results may vary from person to person. This content is for informational purposes only and does not substitute a consultation with a qualified medical professional. Dr. Cheena Langer, MD is a registered medical practitioner.