Designer street drug called Flakka is growing in popularity in states like Florida, Texas and Ohio and it is happening largely because the drug has not been banned in these states yet.

According to Dr. Robert Glatter, Flakka causes "excited delirium" which includes seemingly superhuman strength, paranoia, hallucinations, excessive sweating and an abundance of manic energy.

Flakka comes in a crystalline-form like methamphetamines and it can be swallowed, injected or smoked. It can also be smoked in an e-cigarette. Its effects last three to four hours, Glatter told Forbes.

The main concern comes in how the drug acts as a re-uptake inhibitor of dopamine and norepinephrine, both important chemicals for nerve transmission. Flakka blocks the ability of human body to re-uptake the chemicals, which causes concentrated levels of dopamine and serotonin in the body - causing "excited delirium."

When in the hyperactive state, the body temperature of Flakka users can jump as high to 106 degrees Fahrenheit and it could cause kidney failure. Flakka can also trigger "anxiety, paranoia, and delusions, leading to a psychotic state, characterized by a surge of violence associated increased strength and loss of awareness of reality and surroundings," according to Glatter.

"We're starting to see a rash of cases of a syndrome referred to as excited delirium," Jim Hall, an epidemiologist at the Center for Applied Research on Substance Use and Health Disparities at Nova Southeastern University in Florida, told CBS News. "This is where the body goes into hyperthermia, generally a temperature of 105 degrees. The individual becomes psychotic, they often rip off their clothes and run out into the street violently and have an adrenaline-like strength and police are called and it takes four or five officers to restrain them. Then once they are restrained, if they don't receive immediate medical attention they can die."

"On a scale of one to 10, Flakka is a 12," Lt. Dan Zsido of the Pinellas County Sheriff's Office told 10 News Tampa Bay Sarasota. "It comes from a place where we don't know how it's being made, who's making it, and what's been added to it before it reaches the end user so it's very dangerous."

Glatter said the the U.S Drug Enforcement Administration (DEA) reports that Flakka cases have gone from zero (in 2010) to 85 cases reported (in 2012) to more than 670 (in 2014).