Is This Folliculitis? Skin Infections and Symptoms - Dermatology

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Based on the symptoms you've described, it does sound like you may be experiencing folliculitis, which is an infection or inflammation of the hair follicles. Folliculitis can occur due to various reasons, including bacterial infections, fungal infections, or even irritation from shaving or friction.
In your case, the red bump you noticed near your armpit, which was painful and later developed into a lesion that oozed pus, aligns with typical presentations of folliculitis. The fact that the bump has changed over time, with a small opening that occasionally discharges pus, suggests that there may be an ongoing infection or inflammation in that area. The presence of pain during friction or sweating further supports this, as irritation can exacerbate the condition.

Folliculitis often presents as small red bumps or white-headed pimples around hair follicles, and it can be itchy or painful. The condition can be caused by bacteria, most commonly Staphylococcus aureus, but it can also be due to fungal infections, particularly in warm, moist environments. Other factors that can contribute to folliculitis include tight clothing, excessive sweating, or using non-sterile shaving equipment.

In terms of treatment, if the folliculitis is mild, it may resolve on its own with proper hygiene and care. However, if the infection is more severe or persistent, topical antibiotics or antifungal medications may be necessary. In some cases, oral antibiotics may be prescribed, especially if there is a significant bacterial infection. It's also important to avoid shaving or irritating the area until it has healed, as this can worsen the condition.

Given that your symptoms have persisted for over a month, it is crucial to seek medical attention from a healthcare provider. They can perform a physical examination, possibly take a culture of the pus to determine the specific cause of the infection, and recommend appropriate treatment. Additionally, they can rule out other potential skin conditions that may mimic folliculitis, such as hidradenitis suppurativa or other types of dermatitis.

In summary, while your symptoms are consistent with folliculitis, a definitive diagnosis can only be made through a clinical evaluation. It's essential to address this issue promptly to prevent further complications and to ensure effective treatment. If you find that the area becomes increasingly painful, red, or swollen, or if you develop a fever, seek immediate medical care.