Allergy Symptoms: From Sneezing to Anaphylaxis

Allergy Symptoms: From Sneezing to Anaphylaxis

Allergy symptoms depend on where the allergen lands - nose, skin, gut, or the whole body. Most reactions are miserable but harmless. One pattern is a race-against-time emergency: know it cold.

By Body System

• Nose and eyes (hay fever / allergic rhinitis): repeated sneezing, runny or blocked nose, itchy watery eyes, itchy palate
• Skin: raised itchy wheals (hives/urticaria), swelling of lips or eyelids (angioedema), eczema flares
• Gut (food allergy): nausea, vomiting, cramps, loose motions within minutes to hours of the food
• Airways: wheeze, cough, chest tightness - especially in those with asthma

The Emergency: Anaphylaxis

Call emergency services immediately if a reaction brings any of:

• Swelling of tongue or throat, hoarseness, difficulty swallowing or breathing
• Sudden widespread hives with dizziness, faintness, or collapse
• Rapid pulse, confusion, or loss of consciousness

Anaphylaxis can kill within minutes. The treatment is an adrenaline auto-injector (if prescribed) and an ambulance - not antihistamines, not waiting, per NHS allergies guidance.

The Classical Symptom Map

Madhava Nidana (Chapter 50) separates the urticaria group with a clinician's eye:

• Sheetapitta (Vata-dominant): pricking pain, burning, red raised wheals, thirst, nausea - classically triggered by cold wind contact
• Udarda (Kapha-dominant): heavier, larger patches like insect bites, intense itching, body heaviness, poor appetite
• Kotha (Ama-type): sudden itchy wheals with nausea, bitter taste, and digestive upset after dietary indiscretion

For the nasal pattern, Charaka (Chikitsa Sthana 26) describes Pratishyaya in three doshic flavours: Vataja (thin watery discharge, paroxysmal sneezing), Pittaja (yellow, warm, burning discharge), and Kaphaja (thick white discharge, heavy head, lost smell). A modern reader will recognise allergic rhinitis in the first and sinus infection territory in the others - the texts mixed categories that modern diagnosis now separates, which is exactly why "classical type" cannot substitute for a proper diagnosis.

Frequently Asked Questions

How fast do allergy symptoms appear? Airborne and skin-contact reactions: minutes. Food allergy: usually within minutes to 2 hours. Some drug and gut reactions can be delayed by days.

Is every rash an allergy? No - infections, heat, and autoimmune conditions mimic hives and eczema. Recurrent or unexplained rashes deserve a doctor's look.

Can allergy symptoms change over time? Yes. Children often outgrow milk and egg allergy; adults can lose or gain sensitivities. Severity of past reactions does not reliably predict the next one.

What is the difference between allergy and intolerance? Allergy involves the immune system and can be dangerous; intolerance (like lactose) is digestive and uncomfortable but not life-threatening.