Addiction: a chronic, relapsing brain disease that is characterized by compulsive drug seeking and use, despite harmful consequences.

https://www.drugabuse.gov/publications/drugs-brains-behavior-science-addiction/drug-abuse-addiction

Marijuana


Distorted perceptions
Impaired coordination
Difficulty in thinking
Ongoing problems with learning and memory
Red, blurry, blood-shot eyes
Constant mucus filled cough
rapid heartbeat
hunger (munchies)
dry mouth
anxiety, paranoia, fear
slow reaction time
loss of control

**http://www.timberlineknolls.com/drug-addiction/marijuana/signs-effects/

Opiates


Noticeable signs of elation/euphoria
Sedation/drowsiness
Confusion
Constricted pupils
Slowed breathing
Intermitten nodding off or loss of consciousness
Constipation
Dr. shopping
Shifting or dramatically changing moods
Extra pill bottles found around
Social withdrawal/isolation
Sudden financial problems

    Withdrawal Symptoms

Headache

Nausea/vomiting

Diarrhea

Sweating

Fatigue

Anxiety

Inability to sleep

**https://drugabuse.com/library/opiate-abuse/#signs-and-symptoms



Cocaine


Excitability

Dilated pupils

Runny nose

Weight loss

Mood swings

Social isolation

Risky behaviors

Nosebleeds

Boost in confidence

Talkative

Changes in sleep/eating patterns

Burn marks on hands/lips

Deterioration in hygiene

Financial difficulties

Increased need for privacy

Spoons, razor blades, plastic baggies in clothing or person's room

**https://americanaddictioncenters.org/cocaine-treatment/signs/

Alcohol


Lying about or hiding your drinking

Drinking to relax or feel better

Blacking out regularly

Being unable to stop once you start

Drinking in dangerous situations

Neglecting your responsibilities

Having relationship problems

Being able to drink more than you use to

Experiencing withdrawal

Trying to quit but being unable to

**https://www.google.com/amp/s/www.recoveryranch.com/articles/alcohol-abuse-alcoholism/are-you-an-alcoholic-10-warning-signs-of-addiction/amp/