What Is a Cough? What Causes It and How Can It Be Relieved?

What Is a Cough?

A cough is a natural reflex that helps protect the airways. It helps clear mucus, germs, and irritants that accumulate in the throat and lungs.

However, in some cases, coughing may persist and become chronic, presenting as a persistent cough, dry cough, or productive cough.

When Should a Persistent Cough Be Taken Seriously?

Although coughing is common in everyday life and is often associated with a minor infection, the following situations may require closer evaluation:

• A cough that persists for one week

• A cough that persists for two weeks

• A cough that lasts for one month

• A cough that lasts for two months

What Are the Different Types of Cough?

Dry Cough

A dry cough is a type of cough that does not produce phlegm and is often accompanied by a feeling of irritation in the throat.

Causes of Dry Cough

• Upper respiratory tract infections

• Allergic reactions

• Gastroesophageal reflux disease (GERD)

• Smoking

• Asthma

• Dry air

What Causes a Persistent Dry Cough?

• Allergies

• Asthma

• Reflux

• Prolonged irritation

Productive Cough

A productive cough occurs when mucus produced in the airways is expelled.

What Causes a Productive Cough?

• Bronchitis

• Sinusitis

• Lung infections

• Smoking

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Persistent (Chronic) Cough

A cough lasting longer than three weeks is often described as a persistent cough. A chronic cough is generally defined as a cough lasting more than eight weeks in adults, so the duration should be assessed according to age and clinical circumstances.

Most Common Causes

• Asthma

• Chronic obstructive pulmonary disease (COPD)

• Reflux

• Postnasal drip

• Allergic conditions

What Helps Relieve a Cough?

Home Remedies

• Drinking plenty of fluids

• Drinking warm herbal teas, such as linden, ginger, or mint and lemon tea

• Consuming honey

• Gargling with salt water

• Using steam cautiously

• Maintaining comfortable indoor humidity

• Getting adequate rest

How Can a Cough Be Relieved?

General Recommendations

• Increase fluid intake.

• Avoid cigarette smoke.

• Maintain a comfortable indoor humidity level.

• Get sufficient rest.

What Helps Relieve a Dry Cough?

Methods That May Help Ease a Dry Cough

• Honey and lemon in a warm drink

• Ginger tea

• Humidified air

• Adequate fluid intake

• Keeping indoor air from becoming too dry

How Can a Productive Cough Be Relieved?

Measures That May Help Ease Mucus Clearance

• Drinking plenty of water

• Consuming warm soups

• Using humidified air

• Maintaining comfortable indoor humidity

Coughing in Children

Common Causes

• Viral infections

• Allergies

• Postnasal drip

• Asthma

Coughing in Infants: Considerations by Age

Commonly Searched Concerns

• Coughing in a one-month-old baby

• Coughing and wheezing in a two-month-old baby

• Productive cough in a three-month-old baby

• Coughing in a six-month-old baby

• Coughing in a nine-month-old baby

What May Help Relieve a Cough in Infants?

• Continuing breastfeeding to support fluid intake, where appropriate

• Maintaining comfortable room humidity

• Using a clean, cool-mist humidifier when appropriate

Infants should not be exposed to hot steam because of the risk of burns. Honey should not be given to children under 12 months of age.

When Should You Consult a Doctor?

Seek medical advice if you experience:

• A cough lasting longer than one week, particularly if symptoms are worsening

• A cough persisting for two to three weeks

• A cough lasting longer than one month

• Shortness of breath

• Wheezing

• High fever

Seek urgent medical care if coughing is accompanied by severe breathing difficulty, chest pain, or coughing up blood.

What Can Help Stop a Cough?

Supportive Measures

• Honey, for people over 12 months of age

• Warm drinks

• Comfortable indoor humidity

• Adequate fluid intake

The most appropriate approach depends on the underlying cause of the cough.

Should You Use Cough Syrup?

The use of cough syrup depends on the type and cause of the cough. Cough syrup is not necessary for every cough, and some products may not be suitable for young children or people with certain health conditions. Consult a healthcare professional before using medication, particularly for children.

Emsey Medical Editorial Board