Ketamine

At lower doses, ketamine acts a weak stimulant. When dosage increases, ketamine hits users as an intense psychedelic. As a dissociative drug, ketamine causes users to feel painlessness by impeding messages between the brain and body. Ketamine distorts perception and users often experience an effect known as "the K-hole" at high doses, where the reality of a user involves abstracted thought and pseudo-spiritual experiences. In fact, many ketamine users report depersonalization and de-realization, causing out-of-body or near death experiences. While some ketamine users find these dissociative effects pleasant, others experience them as a deep sense of loneliness or emptiness. Hallucinations, both visual and auditory, can also take place during a ketamine trip. Ketamine trips do not tend to lend themselves to social interaction at high doses, but are introspective experiences as users withdraw into themselves. Within 10 to 20 minutes, the effects of ketamine become discernable for users. Muscle paralysis sets in, making it difficult to move. Ketamine users often fall into a "trance" state, finding themselves encountering difficulty speaking and cognitively processing. Ketamine trips are short lived, lasting between 45 minutes and an hour and a half, depending on tolerance. Users often feel drained and exhausted after a ketamine trip and muscle aches often tend to set in as users come down from a ketamine high. Ketamine users experience temporary paralysis of the muscles, loss of physical coordination and become prone to accidental falls and injuries. Research studies indicate that ketamine addiction can lead to brain damage, particularly the formation of vacuoles, also known as "Olney’s lesions." Ketamine use does not usually result in overdoses from self-administered use, largely because unconsciousness sets in before the body reaches the level of overdose. However, if ketamine a user intakes ketamine from a third party, overdose can occur if dosage continues after loss of consciousness.

Urticaria

Urticaria, or hives, is a skin condition commonly caused by an allergic reaction, characterized by raised red skin wheals (welts). Hives are a skin-disease--itis or --uredo. Wheals from urticaria can appear anywhere on the body, including the face, lips, tongue, throat and ears. The wheals may vary in size from about 5 mm (0.2 inches) in diameter to the size of a dinner plate; they typically itch severely, sting or burn, and often have a pale border. Direct contact with an allergic substance or an immune response to food or some other allergen, causes urticaria, but it also appears for other reasons, notably emotional stress or innocent events, such as mere rubbing or exposure to cold.