
Jiraporn, a member of Krung Thai bank's staff, suffered a cut on the back of her head, the result of her fall.
Police had to seal off the station, which is the terminal of the Skytrain's northern route and is always packed during peak hours to facilitate the rescue.
Police said they were investigating the accident by examining the security cameras at the station.
However, police have two theories for the accident.
First, they suspect that Jiraporn fell from the platform as a result of people pushing so as to be the first to get on to the train.
Secondly, that Jiraporn may have fainted. She was sent to Ratchawithee hospital for a check up.