Cough: Causes, Diagnosis, Treatment
What is a cough?
A cough is a reflex action that helps clear the airways in your throat and lungs by expelling irritants, mucus, or foreign substances. It can be caused by various factors, such as infections, allergies, or lung conditions.
What are the types of cough?
Coughs can be categorized into several types based on their characteristics and underlying causes. Common types of cough include:
● Dry Cough:
Also known as a non-productive cough, this cough doesn't produce mucus. It can be caused by irritation, allergies, or viral infections.
● Wet Cough:
Also called a productive cough, this type produces mucus or phlegm. It's often associated with respiratory infections like colds or flu.
● Barking Cough:
Typically seen in children with croup, a barking cough is characterized by a harsh, brassy sound when breathing in.
● Whooping Cough:
Also known as pertussis, this severe cough is accompanied by a "whooping" sound during inhalation and is caused by a bacterial infection.
● Chronic Cough:
Lasting for more than 8 weeks, this persistent cough can be a symptom of underlying conditions like asthma, acid reflux, or chronic bronchitis.
● Postnasal Drip Cough:
Caused by excessive mucus dripping down the back of the throat, often due to allergies or sinus infections.
● Smoker's Cough:
Common among smokers, it's characterized by a persistent cough due to irritation and damage to the airways.
● Allergic Cough:
Triggered by allergens like pollen, dust, or pet dander, this cough is often accompanied by other allergy symptoms.
● Psychogenic Cough:
A rare type of cough with no underlying physical cause, often linked to psychological factors.
● Gastroesophageal Reflux Disease (GERD) Cough:
Caused by stomach acid flowing back into the esophagus, leading to irritation and coughing.
Remember, if you have a persistent or severe cough, it's important to consult a healthcare professional for proper diagnosis and treatment.
Who is more likely to experience a cough?
Anyone can experience a cough, as it is a common reflex that can be triggered by various factors. However, certain groups of people may be more likely to experience a cough under specific circumstances:
■ Children:
Children, especially those in daycare or school settings, are more susceptible to respiratory infections that can cause coughs.
■ Elderly:
Older adults may have weakened immune systems, making them more prone to respiratory infections and chronic conditions that can lead to coughing.
■ Smokers:
Smoking irritates the airways and can lead to chronic coughing, commonly known as smoker's cough.
■ People with Allergies:
Individuals with allergies are more likely to experience coughing as a response to allergens like pollen, dust, or pet dander.
■ People with Respiratory Conditions:
Individuals with conditions like asthma, chronic obstructive pulmonary disease (COPD), or bronchitis are more prone to frequent and persistent coughing.
■ Those with Gastroesophageal Reflux Disease (GERD):
GERD can cause stomach acid to flow back into the esophagus, leading to a persistent cough.
■ Healthcare Workers:
People who work in healthcare settings may be exposed to various infections and irritants, increasing their risk of developing a cough.
■ Close Contacts of Infected Individuals:
People who are in close contact with someone who has a contagious respiratory infection are more likely to develop a cough themselves.
It's important to note that while certain groups may be more predisposed to experiencing a cough, anyone can develop a cough due to a variety of factors such as infections, allergies, irritants, and underlying health conditions. If a cough persists, worsens, or is accompanied by other concerning symptoms, it's recommended to seek medical advice.
What are the most common causes of a cough?
The most common causes of a cough include:
● Respiratory Infections:
Viral infections like the common cold, flu, and respiratory syncytial virus (RSV) often lead to coughing as the body tries to clear mucus and irritants from the airways.
● Allergies:
Exposure to allergens such as pollen, dust mites, pet dander, or mold can trigger an allergic reaction that leads to coughing.
● Postnasal Drip:
Excess mucus from allergies or infections can drip down the back of the throat, causing irritation and coughing.
● Asthma:
Inflammation and narrowing of the airways in asthma can result in coughing, wheezing, and shortness of breath.
● Gastroesophageal Reflux Disease (GERD):
Stomach acid flowing back into the esophagus can lead to irritation and coughing.
● Chronic Obstructive Pulmonary Disease (COPD):
Conditions like chronic bronchitis and emphysema, which fall under COPD, can cause persistent coughing due to damaged airways.
● Smoking:
Smoking irritates the airways and can lead to chronic coughing, known as smoker's cough.
● Environmental Irritants:
Exposure to pollutants, smoke, strong odors, or chemicals can trigger coughing.
● Medications:
Some medications, especially those that inhibit the body's ability to produce mucus, can lead to a dry cough.
● Whooping Cough (Pertussis):
A bacterial infection that causes severe bouts of coughing with a "whooping" sound during inhalation.
● Vocal Cord Irritation:
Overuse or strain on the vocal cords can result in a persistent cough.
● Lung Conditions:
Conditions like pneumonia, bronchitis, and lung cancer can cause coughing as a symptom.
It's important to remember that a cough can have various causes, and a healthcare professional can help determine the underlying reason for your cough and provide appropriate treatment.
What can be done to control or relieve a cough?
To control or relieve a cough, you can try the following:
■ Stay Hydrated:
Drink plenty of fluids to help thin mucus and soothe the throat.
■ Humidify the Air:
Use a humidifier or take a steamy shower to add moisture to the air, which can help ease throat irritation.
■ Honey:
Consuming honey, especially before bedtime, can provide relief for a cough. Note that honey should not be given to children under 1 year old due to the risk of botulism.
■ Cough Drops or Lozenges:
Sucking on cough drops or lozenges can temporarily relieve throat irritation and reduce coughing.
■ Saline Nasal Spray:
Using a saline nasal spray can help alleviate postnasal drip and soothe an irritated throat.
■ Avoid Irritants:
Stay away from smoke, strong odors, and other environmental irritants that can worsen coughing.
■ Elevate Your Head:
Prop up your head with pillows while sleeping to reduce postnasal drip and ease nighttime coughing.
■ Over-the-Counter Medications:
Depending on the cause of your cough, OTC medications like cough syrups, decongestants, or antihistamines may provide relief. Consult a pharmacist or healthcare professional before use.
■ Avoid Trigger Foods:
If you have GERD, avoid acidic or spicy foods that can worsen your cough.
■ Cough Suppressants:
These medications can help reduce the urge to cough and allow you to rest, but use them as directed and consult a healthcare provider if the cough persists.
■ Manage Underlying Conditions:
If your cough is due to an underlying condition like asthma or allergies, managing and treating that condition can help alleviate the cough.
■ Medical Evaluation:
If your cough is severe, persistent, or accompanied by other concerning symptoms (such as difficulty breathing, chest pain, or fever), it's important to consult a healthcare professional for proper diagnosis and treatment.
Remember, the appropriate approach to managing a cough depends on its underlying cause, so it's best to seek advice from a healthcare provider to determine the most effective course of action.
What over-the-counter treatments can I use for cough?
Over-the-counter (OTC) treatments for cough can vary depending on the type of cough you're experiencing and its underlying cause. Here are some common OTC options:
● Cough Suppressants (Antitussives):
These medications can help reduce the urge to cough. Active ingredients may include dextromethorphan. Make sure to follow dosing instructions and consult a pharmacist or healthcare professional before use.
● Expectorants:
These medications help thin mucus, making it easier to clear from the airways. Guaifenesin is a common active ingredient found in expectorants.
● Decongestants:
If your cough is associated with nasal congestion, decongestants like pseudoephedrine or phenylephrine can help relieve congestion and reduce coughing.
● Antihistamines:
If your cough is caused by allergies, antihistamines like diphenhydramine or cetirizine can help alleviate allergy symptoms and reduce coughing.
● Cough Drops or Lozenges:
Menthol or honey-based cough drops can temporarily soothe a sore throat and reduce coughing.
● Nasal Sprays:
Saline nasal sprays can help moisturize nasal passages and alleviate postnasal drip, which can trigger coughing.
● Honey:
Honey has natural soothing properties and can be taken on its own or added to warm tea to help alleviate coughing. Avoid giving honey to children under 1 year old.
● Throat Lozenges:
Throat lozenges containing ingredients like menthol, benzocaine, or pectin can help soothe throat irritation and reduce coughing.
● Pain Relievers:
If your cough is accompanied by a sore throat or discomfort, OTC pain relievers like acetaminophen or ibuprofen can help alleviate these symptoms.
● Cough Syrups:
OTC cough syrups may contain combinations of antitussives, expectorants, and/or decongestants. Always read labels carefully and use as directed.
● Herbal Remedies:
Some herbal remedies like marshmallow root, licorice root, or slippery elm may have soothing effects on the throat and help reduce coughing. Consult a healthcare professional before using herbal remedies.
It's important to read labels carefully, follow dosing instructions, and be aware of any potential interactions with other medications you may be taking. If your cough persists or worsens, or if you have other concerning symptoms, it's recommended to seek advice from a healthcare provider before using any OTC treatments.
How can cough be prevented?
While it's not always possible to completely prevent a cough, there are steps you can take to reduce your risk of developing one:
■ Practice Good Hygiene:
Wash your hands regularly with soap and water to prevent the spread of germs that can lead to respiratory infections.
■ Get Vaccinated:
Stay up to date with vaccinations, including flu shots and other recommended vaccines, to protect against viral infections that can cause coughing.
■ Avoid Smoking:
If you smoke, quit or avoid exposure to secondhand smoke. Smoking irritates the airways and increases the risk of chronic cough.
■ Manage Allergies:
If you have allergies, take steps to reduce your exposure to allergens and consider using allergy medications as advised by a healthcare professional.
■ Maintain a Healthy Lifestyle:
Eat a balanced diet, exercise regularly, and get enough sleep to support a strong immune system.
■ Stay Hydrated:
Drinking enough fluids helps keep the airways moist and can help prevent coughing caused by throat irritation.
■ Use a Humidifier:
Using a humidifier in your home can help maintain moisture in the air, which can prevent dry throat and irritation.
■ Avoid Irritants:
Stay away from environmental irritants like smoke, strong odors, and chemicals that can trigger coughing.
■ Treat Underlying Conditions:
If you have conditions like asthma or gastroesophageal reflux disease (GERD), manage them effectively to reduce the risk of developing a cough.
■ Practice Good Respiratory Etiquette:
Cover your mouth and nose with a tissue or your elbow when coughing or sneezing to prevent the spread of germs.
■ Stay Informed:
Keep yourself informed about respiratory infections and outbreaks, and follow recommended guidelines to reduce your risk of exposure.
■ Stay Away from Sick Individuals:
Avoid close contact with people who have contagious respiratory infections to lower your risk of getting sick.
While these steps can help reduce the risk of developing a cough, it's important to remember that coughs can still occur due to various factors. If you do develop a cough, seek medical advice if it persists, worsens, or is accompanied by other concerning symptoms.
When should I call my healthcare provider about a cough?
You should consider contacting your healthcare provider about a cough if:
● Duration:
The cough lasts for more than a few weeks, especially if it's persistent or worsening.
● Severity:
The cough is severe, causing difficulty in breathing, speaking, or sleeping.
● Accompanying Symptoms:
The cough is accompanied by other concerning symptoms, such as fever, chest pain, wheezing, shortness of breath, coughing up blood, or unexplained weight loss.
● Underlying Conditions:
You have underlying health conditions like asthma, COPD, or a weakened immune system, which can increase the risk of complications.
● Recent Travel or Exposure:
You have recently traveled to an area with infectious diseases or have been in close contact with someone who has a contagious illness.
● Changes in Health:
The cough is a new or sudden change in your health, especially if you've had a recent illness or infection.
● Child's Symptoms:
If your child has a persistent or severe cough, especially if accompanied by high fever, difficulty breathing, or dehydration, seek medical attention.
● Concern for Others:
If you're concerned about the health of someone who has a persistent or severe cough, especially if they're elderly, very young, or have existing health issues.
● Worsening Symptoms:
If the cough is getting worse over time or not improving with self-care measures.
● Unusual Cough:
The cough has unusual characteristics, such as a barking sound, "whooping" noise, or if it's affecting your ability to swallow.
It's always better to err on the side of caution and seek medical advice if you're unsure about the severity or cause of your cough. A healthcare professional can provide proper evaluation, diagnosis, and guidance on how to manage your symptoms effectively.
How do I know if my cough is serious?
A cough can be considered serious if it is accompanied by certain symptoms or characteristics that indicate underlying health issues or potential complications. Here are some signs that your cough might be serious and warrant medical attention:
■ Persistent Duration:
If your cough lasts for more than a few weeks or is not improving with time.
■ Severe Intensity:
If the cough is severe, persistent, and disrupts your daily activities, sleep, or ability to breathe.
■ Coughing Up Blood:
If you are coughing up blood or experiencing bloody or rust-colored mucus.
■ High Fever:
If your cough is accompanied by a high fever, especially if it's persistent or worsening.
■ Shortness of Breath:
If you're experiencing difficulty breathing, wheezing, or tightness in the chest along with your cough.
■ Chest Pain:
If you have chest pain, discomfort, or pressure in addition to your cough.
■ Unexplained Weight Loss:
If you're losing weight without trying and have a persistent cough.
■ Change in Cough Sound:
If your cough has an unusual sound, such as a barking noise or a "whooping" sound during inhalation.
■ Trouble Swallowing:
If your cough is causing difficulty swallowing or if you're choking or gagging.
■ Recent Travel or Exposure:
If you've recently traveled to an area with infectious diseases or have been in close contact with someone who has a contagious illness.
■ Underlying Health Conditions:
If you have preexisting conditions like asthma, COPD, or a weakened immune system, which can make a cough more serious.
■ Concern for Others:
If someone close to you, especially children, the elderly, or those with existing health issues, has a cough that is causing significant distress.
If you're experiencing any of these serious symptoms or if you're uncertain about the severity of your cough, it's important to seek medical attention. A healthcare professional can properly assess your condition, provide a diagnosis, and recommend appropriate treatment or further tests if needed.
Can pregnancy make you cough?
Yes, pregnancy can sometimes lead to coughing. There are several reasons why coughing may occur during pregnancy:
● Hormonal Changes:
Pregnancy hormones can affect the respiratory system, leading to increased mucus production and potential irritation of the airways, which can result in coughing.
● Gastroesophageal Reflux (GERD):
Pregnancy hormones can relax the muscles that normally keep stomach acid from flowing back into the esophagus, leading to heartburn and coughing.
● Nasal Congestion:
Hormonal changes can cause nasal congestion and postnasal drip, which can trigger coughing.
● Increased Blood Volume:
As blood volume increases during pregnancy, fluid can accumulate in the airway tissues, potentially leading to coughing.
● Allergies and Infections:
Pregnant women can still be susceptible to allergies and respiratory infections, which can cause coughing.
● Uterine Expansion:
As the uterus expands, it can put pressure on the diaphragm and lungs, potentially causing shortness of breath and coughing.
● Asthma:
If a woman has preexisting asthma, pregnancy can influence the condition and potentially lead to coughing or exacerbate existing coughing.
It's important for pregnant women to address any persistent or severe coughing with their healthcare provider. While some coughing during pregnancy may be normal, it's essential to rule out any underlying conditions or infections that might require treatment. Pregnant women should always consult a healthcare professional for proper evaluation and guidance.
What does it mean if I cough after eating?
Coughing after eating can be caused by various factors, and it's important to consider the context and any accompanying symptoms. Here are some possible reasons for coughing after eating:
■ Gastroesophageal Reflux Disease (GERD):
Stomach acid flowing back into the esophagus can cause irritation and lead to coughing, especially after eating.
■ Postnasal Drip:
Excess mucus from allergies, sinus infections, or other respiratory conditions can trigger a cough, especially after eating when mucus production increases.
■ Aspiration:
Accidentally inhaling small amounts of food or drink into the airways can lead to coughing. This may be more common in certain conditions or when eating quickly.
■ Food Allergies or Sensitivities:
Certain foods can trigger an allergic reaction or sensitivity, leading to throat irritation and coughing.
■ Laryngopharyngeal Reflux (LPR):
This is a type of reflux where stomach acid reaches the throat and can cause coughing, throat clearing, or a sensation of a lump in the throat.
■ Swallowing Difficulties:
If you have difficulty swallowing (dysphagia), coughing may occur as a protective reflex to prevent choking.
■Asthma:
Coughing can be a symptom of asthma, and certain triggers like eating can exacerbate it.
■ Infections:
Respiratory infections or conditions like bronchitis can cause coughing, which might be more noticeable after eating.
■ Medications:
Some medications, especially those that affect saliva production or muscle tone in the throat, can lead to coughing after eating.
■ Mechanical Irritation:
Eating spicy or hot foods, or consuming foods that are rough or scratchy, can irritate the throat and trigger coughing.
If you frequently experience coughing after eating, especially if it's persistent or accompanied by other symptoms like difficulty breathing, chest pain, or weight loss, it's advisable to consult a healthcare provider. They can help determine the underlying cause and recommend appropriate treatment or management strategies.
What should I know about COVID-19 and cough?
COVID-19, caused by the novel coronavirus SARS-CoV-2, is known to cause a variety of symptoms, and cough is one of the common and distinctive symptoms associated with the disease. Here's what you should know about COVID-19 and cough:
● Cough as a Common Symptom:
Cough is one of the hallmark symptoms of COVID-19. It can range from mild to severe and may be dry (non-productive) or produce mucus (productive).
● Other Symptoms:
COVID-19 symptoms can also include fever, shortness of breath, fatigue, muscle aches, loss of taste or smell, sore throat, and headache, among others.
● Variability in Symptoms:
The severity of symptoms can vary widely, with some individuals experiencing mild or no symptoms (asymptomatic), while others may develop more severe respiratory distress.
● Spread through Respiratory Droplets:
COVID-19 is primarily spread through respiratory droplets released when an infected person coughs, sneezes, talks, or breathes. This is why wearing masks and practicing physical distancing are important preventive measures.
● Isolation and Testing:
If you develop a new or worsening cough, especially when accompanied by other symptoms associated with COVID-19, it's important to isolate yourself from others and seek testing for COVID-19.
● Seek Medical Care:
If you have a cough and suspect you may have COVID-19, especially if you're experiencing difficulty breathing, persistent chest pain, confusion, bluish lips or face, or any emergency warning signs, seek medical attention promptly.
● Preventive Measures:
To reduce the risk of contracting or spreading COVID-19, follow public health guidelines, including wearing masks, practicing good hand hygiene, maintaining physical distance from others, and getting vaccinated if eligible.
● Long-Term Effects:
Some individuals with COVID-19 may experience lingering symptoms, including persistent cough, even after the acute phase of the illness has resolved.
● Variants:
New variants of the virus may impact the symptoms and spread of COVID-19. It's important to stay informed about updates from health authorities and follow their recommendations.
● Vaccination:
COVID-19 vaccines have been developed and authorized for emergency use to help prevent severe illness and reduce the spread of the virus. Vaccination efforts are crucial for controlling the pandemic.
It's important to stay informed about the latest guidance from reputable health organizations, such as the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC), and to follow their recommendations to protect yourself and others from COVID-19. If you have concerns or symptoms, reach out to a healthcare provider for guidance.