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Syphilis is a sexually transmitted infection caused by a type of bacteria known as Treponema pallidum. Syphilis can be challenging to diagnose.
Drug abuse happens when you're using a drug or substance to the point that it interferes with your ability to function.
Drinking too much alcohol, or being unable to control consumption, can indicate alcohol abuse or alcoholism. Too much alcohol in the blood or having withdrawal can lead to serious mental and physical symptoms.