The history provided is inadequate to provide a specific cause of your symptoms.
Abnormal sensory symptoms in the rectum or the anal cavity can be due to multiple causes including hemorrhoids, chronic constipation induced anorectal fissures, functional anorectal disorders like proctalgia fugax, proctodynia, pelvic muscular disorders, and others.
Presence of blood in stools, or pain during defecation can be associated with conditions like hemorrhoids or anal fissures.
Abnormal functioning or irritation of the pelvic nerves is usually the cause of functional anorectal disorders. Protodynia is a condition associated with chronic inflammation of the pelvic nerves and this can causes symptoms like anorectal fullness or pain.
For a proper diagnosis of your condition complete medical history as well as a physical examination is very essential. A anorectal manometry or electromyography study may be advised by your doctor if needed.
Specific treatment of the underlying cause or medications like antidepressents might help in resolution of your symptoms.
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