[32F] With red, painful bump under arm

What might be happening

Based on the information you have provided, here are some possible explanations for the red, painful bump under your arm:

• Abscess: This is a localized infection that can cause a painful, red, swollen bump filled with pus. Abscesses can occur when bacteria enter the skin through a hair follicle or a small cut. Treatment typically involves drainage of the abscess by a healthcare professional and antibiotics if necessary.

• Hidradenitis Suppurativa: This is a chronic skin condition that causes small, painful lumps to form under the skin, often in areas where skin rubs together, such as the armpits. These lumps can become inflamed and infected. Treatment may include antibiotics, anti-inflammatory medications, and in some cases, surgical intervention.

• Inflamed Lymph Node: Lymph nodes can become swollen and painful due to infections or other inflammatory conditions. If the bump is an inflamed lymph node, it may resolve on its own as the underlying condition improves.

What you can do

While it's important to consult a healthcare professional for a formal diagnosis and treatment, here are some steps you can take in the meantime:

1. Warm Compress: Apply a warm compress to the area for 15-20 minutes several times a day. This can help reduce pain and promote drainage if there is an infection.
2. Keep the Area Clean: Gently wash the area with mild soap and water to prevent further infection.
3. Avoid Irritation: Try to avoid shaving or using deodorants that may irritate the area until it heals.
4. Pain Relief: Continue taking over-the-counter pain relievers like Tylenol (acetaminophen) to manage pain.
5. Monitor for Changes: Keep an eye on the bump for any changes in size, color, or the development of drainage. Take pictures to track its progress.

You can use MDandMe to journal your symptoms, track progress, get insights, and share longitudinal medical notes with your provider.

What you should look out for

Seek medical attention if you notice any of the following:

• The bump becomes significantly larger or more painful.
• You develop a fever or chills.
• There is drainage of pus or other fluid from the bump.
• Red streaks appear around the bump, which could indicate a spreading infection.
• The bump does not improve or worsens over the next few days.

Remember, while this advice can help manage your symptoms, it's important to consult a healthcare professional for a formal diagnosis and appropriate treatment.