Methamphetamine use can cause skin sores and lesions, particularly on the face and arms. There are several reasons why methamphetamine users may develop these sores:

Picking and scratching: Methamphetamine use can cause intense itching and the sensation of bugs crawling on the skin, a condition known as formication. Users may scratch or pick at their skin excessively in response to this sensation, which can lead to open sores and lesions.

Constricted blood vessels: Methamphetamine use can cause the blood vessels to constrict, which can reduce blood flow to the skin and other tissues. This can result in tissue damage and delayed wound healing, which can contribute to the development of sores.

Suppressed immune system: Methamphetamine use can suppress the immune system, which can increase the risk of developing infections in open sores and other wounds.

Poor hygiene: Methamphetamine use can lead to poor personal hygiene and self-care, including infrequent bathing, poor oral hygiene, and wearing dirty clothing. This can increase the risk of developing infections in open sores and other wounds.

Injection drug use: Methamphetamine is sometimes injected, which can cause skin sores and lesions at the injection site due to the use of unsterile equipment or improper injection techniques.

Overall, methamphetamine use can have a range of negative effects on the body, including the development of sores and lesions on the skin. It’s important to seek professional help and support when struggling with methamphetamine addiction to ensure that individuals receive the care and resources they need to manage the condition and work towards recovery.