In addition to allergic reactions, perianal diseases such as perianal eczema and fissures can also cause the symptoms of small red dots around the anus. Firstly, allergic reactions caused by various internal and external factors can easily cause the symptoms of small red dots on the skin around the anus, and also cause itching on the skin around the anus. Secondly, perianal eczema can cause this symptom to occur. The appearance of perianal eczema is mainly due to the long-term humidity of the perianal environment and endocrine dysfunction. Perianal eczema can cause small papules and granular red spots on the skin around the anus, and cause itching and breakouts. Finally, anal fissures can also cause small red dots near the anus and can lead to small fissures around the anus as the condition progresses.