Symptoms of flu (influenza)

Symptoms of Flu (Influenza)

General Overview

The flu, or influenza, is a common viral infection that primarily affects the respiratory system. Although it shares some symptoms with the common cold, influenza typically manifests more suddenly and can lead to severe health issues if left untreated. Awareness of the specific symptoms can help individuals in the United Kingdom manage and seek appropriate treatment for the flu season, generally lasting from late autumn to early spring.

High Fever

One of the hallmark symptoms of the flu is a high fever, often reaching up to 38°C (100.4°F) or higher. This fever may come on suddenly and be accompanied by chills and sweating. It’s important to monitor and manage fever, especially in children and the elderly, as prolonged high temperatures can lead to complications.

Body Aches and Fatigue

Severe muscle aches and joint pain are commonly reported symptoms. This can be felt throughout the body and is often accompanied by general fatigue that can be quite debilitating. Individuals experiencing these symptoms may find it difficult to perform day-to-day activities.

Respiratory Symptoms

The flu primarily targets the respiratory system, leading to symptoms such as cough, sore throat, and a runny or stuffy nose. Coughs related to influenza can be dry and persistent, potentially lasting for several weeks beyond the acute phase of the illness.

Headaches

Headaches can be a significant symptom of the flu, often presenting as a severe, throbbing pain. This is typically accompanied by other symptoms like sensitivity to light and sound, making it essential to rest in a calm, dark environment during severe episodes.

Gastrointestinal Symptoms

While less common, some individuals may experience gastrointestinal issues such as nausea, vomiting, and diarrhoea. These symptoms are more prevalent in children but can also affect adults. It's crucial to stay hydrated and consult a healthcare provider if these symptoms are severe.

Fatigue and Weakness

Experiencing significant fatigue and weakness is a common complaint among those infected with the flu. Unlike the common cold, where symptoms might be milder and resolve more quickly, the flu can lead to prolonged periods of feeling unwell, sometimes lasting two weeks or more.

When to Seek Medical Advice

It's vital to seek medical advice if you experience difficulty breathing, chest pain, sudden dizziness, or persistent vomiting. High-risk groups such as the elderly, young children, pregnant women, and individuals with chronic health conditions should consult a healthcare provider if flu symptoms arise. Flu vaccinations are also recommended to mitigate the risks associated with influenza.