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What causes a hard black pimple near the groin?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I have a hard black pimple near my left leg, close to my testicle (but not on it). It feels soft on the outside but hard inside, like a knot under the skin. I first noticed it two weeks ago. Two days ago, it was painful, but now there is no pain, even if I press or squeeze it. It does not have a visible opening.

Kindly help.

Answered by Dr. Mohamed Abdirahman Ali

Education:

MBBS

Professional Bio:

Dr. Mohamed Abdirahman Ali is a skilled and experienced Consultant General and Laparoscopic Surgeon dedicated to providing advanced surgical care. He specializes in minimally invasive laparoscopic procedures, gastrointestinal and abdominal surgeries, and complex general surgical interventions. Renowned for precision, patient-focused care, and evidence-based approaches, Dr. Ali combines technical expertise with compassionate guidance, ensuring optimal outcomes and promoting faster recovery and overall wellness for his patients.

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome to icliniq.com.

I understand your concern.

Swelling in the groin area can have different causes and should be checked by a doctor, with an ultrasound helping to determine the exact issue. One possible cause is a sebaceous cyst, which occurs when a gland becomes blocked. Symptoms include redness, warmth, tenderness, swelling that increases over time, and sometimes a small black dot in the center. If the cyst is small and not causing any issues, monitoring it may be enough.

However, if it becomes uncomfortable, surgical removal might be necessary. If the cyst gets infected, leading to warmth, pain, or fever, a doctor may prescribe antibiotics like Augmentin 625 milligrams (Amoxiclav) (twice daily for five days) and Brufen 400 milligrams (once daily) (Amoxiclav) before considering removal. Another possible cause is lymph node swelling, which can occur due to infections such as urinary tract infections (UTIs). Additionally, folliculitis, an infected hair follicle, maybe the issue if the swelling is red, warm, and filled with pus. I would like to know if you have experienced any of these symptoms or have a history of injury in the area, such as from shaving, or if you have had a UTI.

I hope you are satisfied with my answer. For further queries, you can consult me at iCliniq.

Thank you.

Medically reviewed by iCliniq medical review team
Published At May 21, 2025
Reviewed At May 27, 2025

Education:

MBBS

Professional Bio:

Dr. Mohamed Abdirahman Ali is a skilled and experienced Consultant General and Laparoscopic Surgeon dedicated to providing advanced surgical care. He specializes in minimally invasive laparoscopic procedures, gastrointestinal and abdominal surgeries, and complex general surgical interventions. Renowned for precision, patient-focused care, and evidence-based approaches, Dr. Ali combines technical expertise with compassionate guidance, ensuring optimal outcomes and promoting faster recovery and overall wellness for his patients.

This doctor is not available for online consultations on the platform anymore.

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Companion

Groin Lump Diagnosis Companion

How it works

A hard black pimple near the groin can be concerning. This section explains common causes and what to look for.

1

Hard
Black

2

Sebaceous
Cyst

3

Node
Swelling

4

Folliculitis
Detail

5

Seek
Medical

6

Diagnosis
Steps

This information is based on general medical guidance. It is not a substitute for professional medical advice; consult a qualified clinician.

Always consult a doctor before taking medication; self-medication carries serious health risks. Take exact prescribed doses, and never start, change, or stop treatment without medical supervision.

Education:

MBBS

Professional Bio:

Dr. Mohamed Abdirahman Ali is a skilled and experienced Consultant General and Laparoscopic Surgeon dedicated to providing advanced surgical care. He specializes in minimally invasive laparoscopic procedures, gastrointestinal and abdominal surgeries, and complex general surgical interventions. Renowned for precision, patient-focused care, and evidence-based approaches, Dr. Ali combines technical expertise with compassionate guidance, ensuring optimal outcomes and promoting faster recovery and overall wellness for his patients.

This doctor is not available for online consultations on the platform anymore.

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