Differential Diagnosis for Penile Head Bruising with Pain on Urination
- Single Most Likely Diagnosis
- Trauma to the penis: This is the most likely diagnosis given the symptoms of penile head bruising and pain on urination. The trauma could be due to various reasons such as accidental injury, sexual activity, or other forms of physical trauma.
- Other Likely Diagnoses
- Urinary tract infection (UTI): A UTI could cause pain on urination, and if the infection is severe, it might lead to inflammation that could cause bruising.
- Sexually transmitted infections (STIs): Certain STIs like herpes or syphilis can cause ulcers or lesions on the penis, which might appear as bruising and cause pain during urination.
- Phimosis: This condition, where the foreskin cannot be fully retracted over the glans penis, can lead to urinary retention, pain, and potentially bruising due to increased pressure.
- Do Not Miss Diagnoses
- Penile fracture: Although less common, a penile fracture is a medical emergency that requires immediate attention. It can occur due to trauma and might present with bruising, swelling, and pain, especially during urination.
- Cancer: Though rare, penile cancer can cause pain and changes in the appearance of the penis, including bruising. Early detection is crucial for effective treatment.
- Rare Diagnoses
- Henoch-Schönlein purpura (HSP): A form of vasculitis that can cause bruising, including on the genitals, along with other symptoms like joint pain and abdominal pain.
- Fabry disease: A genetic disorder that can lead to the accumulation of a particular type of fat in the body's cells, causing a variety of symptoms including pain and bruising.
- Behçet's disease: A rare disorder that causes blood vessel inflammation throughout the body, leading to symptoms like mouth sores, genital sores, and potentially bruising.