Acute Rashes
Acute Rashes
Acute rashes, also called welts, wheals, hives, or urticaria, are raised, itchy patches that appear suddenly on the skin. They may be spread across large areas of the body or confined to a specific location. The most noticeable symptom is itchiness, often accompanied by redness, bumps, raised splotches, or changes in skin texture.
Other common symptoms associated with acute rashes include:
- Blisters
- Rough or leathery skin texture
- Crusty, dry, or scaly skin
If the rash occurs with any of these additional symptoms, seek immediate medical attention.
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Causes of Acute Rashes
An acute rash can be triggered by a variety of factors, including:
- Insect bites (ticks, mosquitoes, or fleas)
- Fungal infections
- Allergic reactions (food or environmental allergies)
- Medications such as antibiotics or NSAIDs
- Bacterial or viral infections (e.g., flu or cold)
- Exposure to heat or cold
- Unknown triggers – sometimes the cause isn’t obvious
Rashes occur when the body releases histamines and other chemical messengers in response to a trigger. This causes blood vessels to open and fluid to accumulate in the skin, producing redness, bumps, and itching.
Symptoms of Acute Rashes
Severe or concerning symptoms that may accompany a rash include:
- Facial swelling
- Difficulty breathing
- Increasing pain
- Diarrhoea or vomiting
- Neck or head pain
- Mental confusion
- Fever
Common Types of Rashes
Eczema
Inflamed, itchy patches that may become dry, thick, or scaly. Stress, family history, and skin irritants increase the risk.
Contact Dermatitis
Small, raised or flat itchy patches triggered by contact with allergens or irritants such as latex, detergents, soaps, metal, or chemicals.
Atopic Dermatitis
Itchy, blister-like patches in skin folds. Can produce fluid, crusting, or dryness. Often triggered by allergens, rough clothing, or overheating.
Urticaria (Hives)
Sudden, raised, or patched areas of swollen skin or mucous membrane. It may burn or itch. Common triggers include latex, bee stings, smoke, certain foods, or blood transfusions.
Pityriasis Rosea
Often appears before viral or bacterial illnesses. Starts as a patch on the abdomen, back, or chest and can spread as small red, cone-shaped bumps in groups.
Treatment Options
Healthcare professionals may recommend medications such as:
- Dupixent
- Allegra
- Zyrtec
- Xolair
- Triamcinolone
When to Contact Your Doctor
Seek medical advice if you experience any of the following:
- Cold, cough, or swollen/red eyes
- Fever
- Blisters or sores in the mouth or genital area
- Peeling skin or open wounds from scratching
- Rash lasting longer than three months
- Pain or swelling in the joints
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- If you’re unsure where to start, we recommend booking a general practitioner (GP) consultation.
- Our GP will guide you based on your symptoms, family history, and overall health concerns.
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