Some of the possible culprits are:
- Dirty or not clean
- Irritation of soap/body clothes
- Sweaty sports clothes
- Laundry detergent
“The red bumps on your penis may also stem from an infection or even an autoimmune disorder,” says Mure.
One example is balanitis, which according to the Cleveland Clinic, is defined as pain and inflammation of the glans, or head, of the penis, which is usually caused by a fungal infection, or possibly a bacterial or viral infection.
Signs include lumps and irritation, and it’s more common among uncircumcised men. Although it is not contagious, men may not want to have sex with anyone when experiencing this symptom.
According to Planned Parenthood, various sexually transmitted infections can also be characterized by red bumps, including genital herpes, genital warts (which may be caused by the human papilloma virus), scabies, chlamydia and syphilis.
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