Boils and carbuncles are common skin infections typically caused by Staphylococcus aureus bacteria. These infections result in the formation of pus-filled pockets in the skin that contain bacteria, dead skin cells, and infection-fighting white blood cells. The term for these pus pockets varies: a single infection is called a boil, while a cluster of boils that connect under the skin is known as a carbuncle.

These infections frequently develop in areas of the body that experience friction and sweating, such as the neck, buttocks, thighs, armpits, and groin. It’s crucial to maintain proper hygiene, washing hands thoroughly after using the restroom and before handling food to prevent spreading the bacteria. For added precaution, carrying an alcohol-based hand sanitizer can be beneficial when soap and water are not available.

Hidradenitis suppurativa (HS) is another skin condition characterized by painful boils. It’s a chronic disease that results from blocked hair follicles, which can lead to deep infections or abscesses. HS often affects areas where skin rubs together, such as the armpits and groin.

Additionally, certain conditions like folliculitis, boils, and carbuncles can arise due to infections of one or more hair follicles anywhere on the skin. Factors such as rubbing and sweating can exacerbate these conditions, particularly in areas like the neck, waist, and inner thighs.

Moreover, your natural body oils or sebum can get trapped, leading to sebaceous hyperplasia—typically more prominent with age and often occurring on the face. Understanding the root cause of most acne flares involves a multifactorial approach.

In terms of prevention, it’s important to note that most boils are caused by the bacteria Staphylococcus aureus. These bacteria can enter through small injuries or insect bites, creating a suitable environment for a boil to develop. Thus, taking care to prevent skin injuries and maintaining cleanliness can help in reducing the risk of such infections.