Acne is a common skin condition that can affect people of all ages. It occurs when hair follicles become clogged with oil and dead skin cells, leading to redness. Acne can manifest in multiple styles, ranging from mild pimples to painful nodules. Understanding the origins of acne is crucial for effectively managing this troublesome skin problem.

Pneumonia is the lungs, leading to inflammation in the air sacs. This condition can be caused by various organisms, including bacteria, viruses, and fungi. It's crucial to recognize the signs of pneumonia promptly to seek appropriate medical attention. Common indicators of pneumonia include cough, fever, trouble breathing, chest pain, and fatigue.