ENT and Respiratory system

Dry Cough

A cough is a reflex action to clear your airways of mucus and irritants such as dust or smoke. It's rarely a sign of anything serious. A "dry cough" means it's tickly and doesn't produce any phlegm (thick mucus). Acute cough represents the largest single cause of consultation in primary care. Cough in children is a common reason for medical consultations and affects quality of life. Its prevalence varies with age and sex. Coughs in children may be caused by:  respiratory tract infections, asthma and Gastro-oesophageal reflux disease can all affect children.

References: http://www.nhs.uk/conditions/Cough/Pages/Introduction.aspx
Jurca M. et al. – Prevalence of cough throughout childhood: A cohort study. – PLoS One. 2017 May 24;12(5):e0177485

Vertigo

Vertigo is a symptom, rather than a condition itself. It's the sensation that you, or the environment around you, is moving or spinning. This feeling may be barely noticeable, or it may be so severe that you find it difficult to keep your balance and do everyday tasks. Attacks of vertigo can develop suddenly and last for a few seconds, or they may last much longer. If you have severe vertigo, your symptoms may be constant and last for several days, making normal life very difficult.

Vertigo is commonly caused by a problem with the way balance works in the inner ear, although it can also be caused by problems in certain parts of the brain.

Vertigo, dizziness, and unsteadiness have a high and roughly even prevalence throughout adult life. The three symptoms are correlated with each other, usually appear in short episodes and in various combinations rather than in isolation

References:http://www.nhs.uk/conditions/vertigo/Pages/Introduction.aspx
Alexandre Bisdorff et al. – The Epidemiology of Vertigo, Dizziness, and Unsteadiness and Its Links to Co-Morbidities – Front Neurol. 2013; 4:29