Black tarry stools has many potential causes spanning multiple organ systems. A systematic approach — considering the character, timing, triggers, and associated symptoms — helps identify the most likely cause and guides appropriate management.
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Start Free AI Analysis →What is the most common cause of melena?
The most common causes of melena in the general population are stress, dehydration, poor sleep, and minor infections. In specific populations, chronic disease and other underlying conditions account for a significant proportion of cases.
Can medications cause melena?
Yes — many medications list melena as a potential side effect. Common culprits include antihypertensives, antibiotics, NSAIDs, and hormonal treatments. Review your medication list with a pharmacist or doctor if you suspect a drug-related cause.
Is melena always related to a physical cause?
No. Psychological conditions such as anxiety, depression, and stress disorders frequently produce genuine physical melena through the mind-body axis. Psychosomatic melena is a real, measurable phenomenon requiring appropriate treatment.
Possible Causes