The common cold is a viral infection of your nose and throat (upper respiratory tract). It's usually harmless, although it might not feel that way. Many types of viruses can cause a common cold. Child . . .
Arthritis is inflammation of one or more joints, causing pain and stiffness that can worsen with age. The most common types are osteoarthritis and rheumatoid arthritis. Osteoarthritis involves wear-an . . .
Nausea is an unpleasant, diffuse sensation of unease and discomfort, often perceived as an urge to vomit. While not painful, it can be a debilitating symptom if prolonged. Nausea has many causes inclu . . .
Asthma is a condition in which your airways narrow and swell and may produce extra mucus. This can make breathing difficult and trigger coughing, a whistling sound (wheezing) when you breathe out and . . .