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Altitude Sickness

Altitude Sickness Overview

Altitude Sickness, Health Conditions /

Altitude Sickness Overview Altitude sickness, also known as acute mountain sickness (AMS), is a condition that occurs when someone ascends to high altitudes too quickly, without giving the body enough time to adjust to the reduced oxygen levels. It commonly affects travellers, hikers, and climbers at elevations above 2,500 metres (8,200 feet), though some people may experience symptoms even lower. The air becomes thinner the higher you go, meaning less oxygen is available with each breath. If the body doesn’t adapt gradually, symptoms like headaches, nausea, fatigue, and dizziness can develop. These symptoms range from mild and uncomfortable to severe and life-threatening. There are three main types of altitude sickness: In South Africa, this is rarely encountered at local elevations, but it becomes a real risk when travelling to mountainous regions such as Kilimanjaro, the Drakensberg, the Himalayas, or the Andes. Even healthy and fit individuals can develop symptoms if they ascend too quickly. While mild altitude sickness usually resolves with rest or descent, severe forms require urgent medical attention. Preventing this sickness is often as simple as ascending slowly, staying hydrated, and allowing time for acclimatisation. In the next section, we’ll explore what causes this sickness and why some people are more susceptible than others. 👉 [Next: Causes of Altitude Sickness] Symptoms of Chronic Pancreatitis Complications of Altitude Sickness Treatment for Altitude Sickness Diagnosis of Altitude Sickness

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Causes of Altitude Sickness

Causes of Altitude Sickness

Altitude Sickness, Health Conditions /

Causes of Altitude Sickness Early causes of altitude sickness occur from rapid exposure to low oxygen levels at higher elevations. As altitude increases, air pressure drops, reducing the amount of oxygen available for the body to use. This drop in oxygen is called hypoxia, and it affects how the brain, lungs, and muscles function. The Role of Acclimatisation Your body can adapt to high altitudes — a process known as acclimatisation. This involves: However, these adaptations take several days. When you ascend too fast, your body doesn’t have time to respond, resulting in altitude sickness. Common Triggers Risk Factors Interestingly, the speed of ascent is often more important than the absolute altitude. Someone hiking slowly up a mountain may stay healthy, while another who drives or flies to the same height in hours could become seriously ill. Understanding what causes altitude sickness can help prevent it. Let’s now look at how to identify the symptoms early. 👉 [Next: Diagnosis of Altitude Sickness] Treatment of Carbon Monoxide Poisoning Treatment for Altitude Sickness Altitude Sickness Overview

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Diagnosis of Altitude Sickness

Diagnosis of Altitude Sickness

Altitude Sickness, Health Conditions /

Diagnosis of Altitude Sickness Primarily, the diagnosis of altitude sickness is based on symptoms and recent travel history. There are no blood tests or scans required in most cases — the diagnosis is clinical, based on what the patient feels and how recently they ascended to a higher altitude. Key Symptoms of Acute Mountain Sickness (AMS): These usually begin 6 to 24 hours after arriving at altitude and may worsen overnight. Red Flags for Severe Forms: These are life-threatening emergencies that require immediate descent and medical care. Diagnostic Tools in the Field In high-altitude settings, healthcare providers or guides may use: No imaging or lab work is needed unless complications arise. If you’re planning a trip to a high-altitude location — like Mount Kilimanjaro or the Andes — being aware of these symptoms could help you or your group identify the condition early and take action before it escalates. 👉 [Next: Treatment for Altitude Sickness] Symptoms of Concussion Complications of Altitude Sickness Causes of Altitude Sickness Altitude Sickness Overview

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Treatment for Altitude Sickness

Treatment for Altitude Sickness

Altitude Sickness, Health Conditions /

Treatment for Altitude Sickness Treatment for altitude sickness depends on the severity of symptoms. Mild cases can often be managed with rest and hydration, while severe cases may require emergency descent and oxygen therapy. Mild to Moderate AMS The first step is to: If symptoms improve after 24–48 hours, you may be able to continue ascending — but only slowly and cautiously. Medications may help: Severe AMS, HACE, or HAPE For life-threatening forms of altitude sickness: Additional medications include: People should use these only under medical supervision or with trained guides in remote settings. In South Africa, altitude sickness may not be common locally, but South African travellers frequently experience it abroad. Pre-travel consultations with travel clinics can help with prevention planning and medication. 👉 [Next: Complications of Altitude Sickness] Treatment of Concussion Causes of Altitude Sickness Diagnosis of Altitude Sickness Altitude Sickness Overview

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Complications of Altitude Sickness

Complications of Altitude Sickness

Altitude Sickness, Health Conditions /

Complications of Altitude Sickness While mild altitude sickness is temporary, Complications of Altitude Sickness can become life-threatening without prompt treatment. Complications affect the brain, lungs, and overall function, especially at altitudes over 3,500 metres. 1. High-Altitude Cerebral Oedema (HACE) This is swelling of the brain due to fluid leakage from blood vessels. If untreated, it can lead to: It is often preceded by AMS symptoms that worsen, such as severe headache and confusion. 2. High-Altitude Pulmonary Oedema (HAPE) This occurs when fluid builds up in the lungs, severely impairing oxygen exchange. It can develop quickly and may be fatal. Signs include: Even physically fit individuals are at risk. Immediate descent is crucial. 3. Long-Term Effects Though rare, recurring exposure to high altitudes without proper acclimatisation may lead to: 4. Accidents and Injury Confusion, dizziness, and poor decision-making at altitude can lead to falls, accidents, or getting lost — especially in remote hiking environments. Prevention Is Key Most complications are entirely preventable. Ascending slowly, recognising early symptoms, and knowing when to descend are the most effective strategies. South African and international trekking groups often include trained guides to help monitor climbers and manage risk. Education, preparation, and awareness make all the difference. 👉 End of Series | Back to Overview Acute Respiratory Distress Syndrome Causes of Altitude Sickness Treatment for Altitude Sickness Diagnosis of Altitude Sickness Altitude Sickness Overview

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Allergic Rhinitis

Allergic Rhinitis

Allergic Rhinitis, Health Conditions /

Allergic Rhinitis Overview Allergic Rhinitis, commonly referred to as hay fever, is an allergic reaction that affects the nose and sinuses. It occurs when the immune system overreacts to airborne allergens such as pollen, dust mites, mould spores, or animal dander. These allergens trigger inflammation in the nasal passages, leading to symptoms that can significantly disrupt daily life. In South Africa, allergic rhinitis is widespread and often seasonal, particularly during spring and early summer when pollen levels rise. However, some people experience year-round symptoms due to indoor allergens like pet hair or dust. Common symptoms include: While not life-threatening, this can affect productivity, school performance, and overall quality of life. It is also associated with asthma and eczema, forming part of the “atopic triad.” The condition is usually divided into: Fortunately, this is manageable with lifestyle adjustments, medication, and allergy avoidance strategies. In the next section, we’ll explore the causes and triggers that set off this immune response. 👉 [Next: Causes of Allergic Rhinitis] Dr Sharon Williams Ear Nose & Throat Specialist Foreshore Treatment for Allergic Rhinitis Complications of Allergic Rhinitis Diagnosis of Allergic Rhinitis

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Causes of Allergic Rhinitis

Causes of Allergic Rhinitis

Allergic Rhinitis, Health Conditions /

Causes of Allergic Rhinitis Early Causes of Allergic Rhinitis occur when the immune system identifies a harmless substance — such as pollen or dust — as a threat and reacts by releasing histamines and other chemicals. These cause inflammation in the nasal passages and the classic hay fever symptoms. Common Allergens Risk Factors Certain individuals are more likely to develop allergic rhinitis: In South Africa, wind-pollinated grasses and indigenous trees like Acacia and Oak are major contributors to seasonal flare-ups, while homes with poor ventilation or high humidity foster dust mites and mould growth. Additionally, air pollution and tobacco smoke can irritate the nasal lining and worsen symptoms — even if not allergens themselves. Understanding your specific triggers is essential for effective treatment. Let’s explore how allergic rhinitis is diagnosed and how allergy testing can identify what’s causing your symptoms. 👉 [Next: Diagnosis of Allergic Rhinitis] Dr Sharon Williams Ear Nose & Throat Specialist Foreshore Treatment for Allergic Rhinitis Complications of Allergic Rhinitis Allergic Rhinitis

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Diagnosis of Allergic Rhinitis

Diagnosis of Allergic Rhinitis

Allergic Rhinitis, Health Conditions /

Diagnosis of Allergic Rhinitis With the Diagnosis of Allergic Rhinitis, it is important to start with a detailed history and physical examination. Since many of its symptoms overlap with colds, sinus infections, or flu, identifying an allergic pattern is key. Key Questions a Doctor May Ask: Physical Signs During an exam, your doctor may observe: Allergy Testing If symptoms are persistent or unclear, the following tests may be performed: Both tests help identify the specific allergens triggering your symptoms, allowing for more targeted treatment or allergen avoidance. In South Africa, allergy testing is available through private specialists and some public clinics, although access may vary by province. Accurate diagnosis helps rule out other conditions like non-allergic rhinitis, chronic sinusitis, or nasal polyps. Once a diagnosis is confirmed, a personalised treatment plan can be developed. 👉 [Next: Treatment for Allergic Rhinitis] Causes of Allergic Rhinitis Dr Sharon Williams Ear Nose & Throat Specialist Foreshore Allergic Rhinitis Complications of Allergic Rhinitis

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Treatment for Allergic Rhinitis

Treatment for Allergic Rhinitis

Allergic Rhinitis, Health Conditions /

Treatment for Allergic Rhinitis Treatment for allergic rhinitis focuses on reducing symptoms, improving quality of life, and preventing complications. A combination of avoidance, medication, and lifestyle changes usually offers the best results. Allergen Avoidance The first step is to identify and avoid your triggers: Medications Over-the-counter and prescription medications are widely available in South Africa and globally: Immunotherapy (Allergy Shots or Drops) For moderate to severe cases, immunotherapy may be recommended. This involves regular exposure to small doses of allergens to “desensitise” the immune system over time. It can reduce symptoms long-term and is available through allergists in South Africa. Additional Support Treatment must be consistent — many people feel better within days of starting proper medication, but long-term relief comes with ongoing care. 👉 [Next: Complications of Allergic Rhinitis] Chest and Allergy Centre Cape Town City Centre Allergic Rhinitis Nicola Spray – Senior Speech and Language Therapist – London Diagnosis of Allergic Rhinitis

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Complications of Allergic Rhinitis

Complications of Allergic Rhinitis

Allergic Rhinitis, Health Conditions /

Complications of Allergic Rhinitis While allergic rhinitis is not life-threatening, it can cause chronic discomfort and health complications if left untreated. Over time, inflammation in the nasal passages can spread or lead to secondary issues. Common Complications Emotional and Psychological Impact Living with persistent symptoms can lead to: Prevention and Management The best way to prevent complications is early and consistent treatment. If symptoms are seasonal, start treatment 2–3 weeks before the expected onset. If they’re year-round, regular check-ins with a GP or allergist are advised. In South Africa, pharmacies and clinics are often the first point of contact. Education campaigns and affordable access to antihistamines are helping reduce the long-term burden of allergic rhinitis — but awareness remains key. 👉 End of Series | Back to Overview Causes of Allergic Rhinitis Dr Sharon Williams Ear Nose & Throat Specialist Foreshore Treatment for Allergic Rhinitis Diagnosis of Allergic Rhinitis

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