The man was on his way home from a private party in the southern town when he was set upon by two women his own age, Helsingborgs Dagblad reports.
"There was a commotion of some sort, which ended with him being knocked to the ground and kicked," police spokesman Leif Nilsson told the newspaper.
Police questioned a number of witnesses on the spot, who said they saw the women attack the 19-year-old.
The assault was so severe that the victim had difficulty breathing and was left bleeding heavily from a head wound. He was taken to Lund University Hospital to be treated for his injuries but was able to leave again shortly afterwards.
Police said they were aware of the identities of the two women but had not yet established motives.
"At the moment we are categorizing this as aggravated assault since we have received details that kicks were used," spokeswoman Minna Friberg told Helsingborgs Dagblad.