Yea
No. Pinpoint pupils are caused by opiate (morphine etc.) and organophospate (insecticide) poisoning.
Bright light (as one natural reason). Opiate based drugs and medications can cause pinpoint pupils.
pontine hemorrhage
no, uppers, acid & ecstacy will dialate your pupils. downers, like heroin and oxy's will constrict "pinpoint" your pupils
no and no
One's pupils get smaller in bright light. An extremely bright light can make the pupils become quite small, like a pinpoint. Special situations which can produce pinpoint pupil other than light are: 1. Opium overdose 2. Organophosphate poisoning 3. Pontine haemorrhage
Heroin intoxication.
Yes, it does. Especially once it starts to wear off, however, it may depend on the person.
Yes it does. But not to the extent that stronger opioids do. It is much weaker than oxycodone, morphine etc. Constriction of pupils is most common when somebody overdoses on tramadol.
No, they change from light. The lighter it is, the smaller the pupil.
The drugs that most commonly cause constricted pupils or "Pinpoint" are strong opiods such as Heroin, morphine, oxycodone, or high doses of norco / vicodin.