If the patient has face puffiness and rout surfaces slightly itchy starting. Which drug can give. It happened after eat fish contain food
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Based on the clinical picture — face puffiness (angioedema) + itchy skin after eating fish — this is an acute allergic (IgE-mediated) reaction to fish. Here is the treatment approach:
Diagnosis: Acute Food Allergy (Fish) — Urticaria + Angioedema
Symptoms explained:
- Face puffiness = Angioedema (swelling of deeper skin layers)
- Itchy skin = Urticaria (hives)
- Trigger = Fish (a common IgE-mediated food allergen, releases histamine from mast cells)
Drug Treatment (Step-by-Step)
🟢 MILD–MODERATE (Itching + Face Swelling, No throat/breathing involvement)
First-line: H1 Antihistamines
| Drug | Dose (Adult) | Notes |
|---|---|---|
| Cetirizine (Zyrtec) | 10 mg once daily | Preferred — second-generation, non-sedating |
| Loratadine (Claritin) | 10 mg once daily | Non-sedating, safe in pregnancy |
| Fexofenadine (Allegra) | 120–180 mg once daily | Non-sedating |
| Chlorphenamine (first-gen) | 4 mg 3× daily | Sedating — use if above not available |
| Diphenhydramine (Benadryl) | 25–50 mg every 6 hrs | Sedating; fast-acting |
Second-generation antihistamines (cetirizine, loratadine) are now the first-line choice. First-generation (chlorphenamine, diphenhydramine) are sedating and no longer preferred, but still effective if needed.
🟡 MODERATE–SEVERE (Significant swelling, multiple body areas)
Add a short course of oral corticosteroid:
- Prednisolone 30–50 mg/day for 3–5 days (adult)
- Reduces inflammation and prevents biphasic reactions
🔴 SEVERE (Throat swelling, difficulty breathing, low BP, anaphylaxis signs)
Epinephrine (Adrenaline) — IMMEDIATE PRIORITY
- Epinephrine 0.3–0.5 mg IM (intramuscular, outer thigh)
- This is the treatment of choice for anaphylaxis or severe angioedema of the throat
- Call emergency services immediately
Key Points
- Watch for danger signs: throat tightness, voice change, difficulty swallowing/breathing, dizziness → these indicate anaphylaxis → give epinephrine immediately
- Fish allergy can worsen with repeat episodes — the next reaction may be more severe
- The patient should avoid all fish and fish-containing foods going forward
- Refer to an allergist for allergy testing (skin prick test or specific IgE) after the acute episode resolves
— Fitzpatrick's Dermatology & Dermatology 2-Volume Set 5e
⚠️ Clinical note: If facial swelling is progressing rapidly or involves the lips/tongue/throat, treat as anaphylaxis with epinephrine — do not wait.
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