A large bloody bag on the head of the penis may be caused by infectious factors such as glansitis, subcutaneous bleeding caused by external extrusion, and symptoms caused by allergic factors.
1. Glans inflammation: for example, acute inflammation of the glans caused by bacterial, mycoplasma, trichomonas, candida and other pathogenic bacteria infections may cause obvious congestion, swelling and pain in the glans, and may also cause the appearance of a large bloody bag on the head of the penis.
2. Subcutaneous bleeding caused by external pressure: for example, the penis is subjected to external friction, extrusion, bruising and other external stimuli, or excessive masturbation, excessive force during sex, improper posture and other factors, may cause local subcutaneous capillary rupture, causing subcutaneous bleeding, resulting in the head of the penis to grow a large bloody bag.
3. Allergic factors: local skin mucous membrane contact dermatitis, or insect bite dermatitis, drug rash and other allergic reactions, may lead to the symptoms of a large blood bag on the head of the penis.
There may be other reasons for a large blood bag on the head of the penis, it is recommended to go to the hospital in time for examination, and follow the doctor’s instructions for treatment, so as not to delay the condition.