A lot of blood spots on the scrotum can be caused by trauma, folliculitis, skin allergies, scrotal eczema and other factors. 1. Trauma: after the scrotum is locally abraded, scraped or bruised, local capillary hemorrhage may occur, resulting in the appearance of a lot of blood spots, which may be accompanied by local pain and other uncomfortable symptoms. 2. Folliculitis: poor long-term hygiene and cleanliness of the scrotum, bacterial infections can occur and trigger folliculitis, red papules can appear on the scrotum, looks like a lot of blood spots, can be accompanied by pain symptoms. 3. Skin allergy: when the scrotum is allergic to detergents, underwear materials, etc., local allergic reactions can occur, and the scrotum skin can appear similar to blood spots of skin damage, which can be accompanied by itching and discomfort. 4. Scrotal eczema: after the occurrence of scrotal eczema can appear in the local small blisters, papules, papules, manifested in the appearance of a lot of blood spots, sometimes accompanied by local oozing performance, there will be intense itching and other symptoms. When there are a lot of blood spots on the scrotum, you should consult a doctor in a timely manner, under the guidance of a specialist to actively carry out appropriate treatment, which will help to alleviate the uncomfortable symptoms as soon as possible.