Meth Sores
Meth sores can involve skin picking, open wounds, or infections. Understand what may cause them, when to get medical care, and what healing can involve.
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What Are Meth Sores?
Meth sores is an informal name for skin wounds that develop during methamphetamine use. Repeated scratching or picking can leave raw patches and scabs. Injecting drugs can also lead to skin injuries and infections. The name does not describe one specific disease, and a sore’s appearance alone cannot establish its cause.[1][2]
If you are worried about your skin, you can ask for help with the wound and with meth use at the same visit. A clinician can assess whether you need wound care, treatment for an infection, or help with itching and picking. You do not need to work out the cause on your own.[3][4]
Seek medical attention immediately if redness spreads quickly around a sore or you develop fever or chills. A worsening skin infection needs care even if you have stopped using meth.[2]
Fast Facts About Meth Sores
These distinctions can help you decide what to discuss with a clinician.
- Picking can break the skin. Meth use can contribute to repeated scratching or picking, but not every person who uses meth develops sores.[1][5]
- A crawling sensation has a name. Formication means feeling as though insects are on or under your skin when they are not there. It has several possible causes and needs assessment.[3]
- A sore and an infection are different. Broken skin can let bacteria enter. Increasing pain, warmth, swelling, or pus should prompt medical attention.[2][4]
- Healing does not always mean the mark disappears. Deeper injuries can leave scars, and wound care may help reduce their appearance.[6]
What Causes Meth Sores?
Several problems can overlap. Someone may scratch itchy skin, repeatedly pick a small spot, or develop an infection at an injection site. Meth also has effects on blood vessels and infection-fighting cells. Understanding these differences helps explain why simply covering a wound may not address everything causing it.[1][7][8]
Skin Picking and the Crawling Sensation
Formication can feel like insects crawling, biting, or moving beneath the skin. It may lead someone to scratch or pick in an effort to get relief. Stimulant drugs, including methamphetamine, can cause this symptom. Certain medicines and other health conditions can cause it too.[3]
Delusional infestation is different: it is a persistent belief that the body is infested despite evidence to the contrary. The sensation and the belief can occur together, but they are not interchangeable. A clinician needs to examine the skin and consider an actual infestation, other skin conditions, medicines, and substance use.[9]
Do not assume that an itch or a rash must come from meth. Tell the clinician when it began, what it feels like, and whether you have used anything to treat it. If unusual sensations come with other changes in what you see, hear, or believe, mention those too. Meth-related psychosis can involve difficulty distinguishing what is real.[3][10]
Repeated Injury and Infection
Picking can reopen skin that has started to heal. A medical note may call the resulting scratches excoriations, which means areas where scratching or rubbing has worn away the skin. Deeper open wounds may be called ulcers. These words describe the injury rather than judging the person who has it.[1]
Injection-related wounds provide another way for bacteria to enter the skin. Infection can develop around a puncture or beneath the surface. An infection is not proof that someone was careless, and waiting for meth to leave the body will not treat an infection that needs medical care.[2][11]
Blood Flow and the Body’s Defenses
Meth can cause vasoconstriction, meaning blood vessels narrow. This can reduce blood flow. That is one of several physical effects of the drug, not a way to predict how quickly a particular sore will close.[7]
In a 2015 study, Mircea Radu Mihu and colleagues found slower wound healing in mice exposed to methamphetamine and a bacterial skin infection. Experiments also found reduced bacteria-fighting activity in human and mouse immune cells. These findings help explain possible effects on healing and infection, but laboratory results cannot tell someone how many days their wound will take to heal.[8]
What Do Meth Sores Look Like?
Skin changes can include scratches, crusted scabs, open sores, and marks left after healing. Picked areas may appear wherever someone repeatedly reaches their skin. Injection-related injuries occur at injection sites. There is no single appearance that reliably identifies meth use.[1][5]
A painful, warm lump may be an abscess, a pocket of pus under the skin. Pus can leak from it. Redness may be harder to see on brown or black skin, so pay attention to warmth, swelling, tenderness, and changes from the person’s usual skin color too.[11]
Not Everyone Has the Same Skin Problems
In a 2025 study led by Brynne Tynes, 94 adults at a residential treatment program in Shreveport, Louisiana, answered questions about their skin.[5] Thirteen reported a crawling sensation since starting meth use. Others reported injection marks, darker patches, or scars. The researchers did not confirm these reports with skin examinations, and many participants had used other substances.[5]
This small, single-center survey cannot tell us how common meth sores are nationwide. It does show why it is more useful to ask about someone’s particular symptoms than to expect everyone to match the same picture.[5]
When a Skin Sore Needs Medical Care
Get prompt medical care for a sore that becomes more painful, swollen, warm, or produces pus. Seek care immediately if redness spreads quickly, or fever or chills develop. A clinician can decide whether the problem is a superficial wound, an infection, or something else.[4][2]
Cellulitis is a bacterial infection in deeper layers of skin. It often causes a painful, warm, swollen area and is treated with antibiotics. An abscess is a collection of pus that may need a clinician to drain it. Do not squeeze, puncture, or try to drain a sore yourself.[2][11][12]
These infections can sometimes require hospital care. A 2024 Australian study described 185 people who injected drugs and were hospitalized with selected skin, bone, or joint infections.[13] It shows the possible seriousness of these complications. Because the study started with hospitalized patients and included different drugs, it does not show that most people with meth sores need hospitalization.[13]
Signs of a Possible Emergency
Call 911 for a suspected infection with confusion, trouble breathing, or severe deterioration. These can be signs of sepsis, a life-threatening reaction to infection that can damage organs. Not every infected sore causes sepsis, but possible sepsis requires immediate assessment and treatment.[14]
A very deep wound or bleeding that will not stop also needs emergency care. Do not wait for a routine addiction appointment to have an urgent wound assessed.[4]
How to Care for a Minor Scratch or Sore
Home care is for a small, superficial wound, not a substitute for treating infection or a deep injury. If you are unsure how serious a sore is, have it examined. Follow any wound-care instructions a clinician gives you.[15][4]
- Wash your hands first. Clean hands help you avoid introducing germs while tending the wound.[12]
- Clean gently. Use mild soap and water. Do not scrub or pick off healing skin.[15][1]
- Keep a minor wound moist and covered. A thin layer of petroleum jelly and a clean bandage can protect a small scratch. Change the bandage daily.[15]
- Leave it alone between dressing changes. Do not pick, pop, or squeeze it. Avoid sharing towels or razors.[12]
- Watch for worsening symptoms. Increasing pain, swelling, or pus needs medical attention. Rapidly spreading redness, fever, or chills needs immediate care.[4][2]
Avoid pouring hydrogen peroxide into a wound because it can damage skin. Antibacterial ointment is not routinely necessary for a minor wound that is cleaned daily. That advice does not mean prescribed antibiotics are unnecessary when a clinician diagnoses an infection.[6][15][2]
If the urge to pick feels hard to control, say so during your appointment. Treatment needs to address the sensation or behavior as well as the wound. Trying harder to ignore it may not resolve the underlying cause.[3][9]
How Long Do Meth Sores Take to Heal?
There is no reliable healing deadline based only on when someone last used meth. A shallow scratch, an infected wound, and a deep injury are different problems. The depth of the injury, whether it keeps getting reopened, and whether an infection needs treatment all matter.[6][1][11]
Stopping meth may help when the drug is driving the crawling sensation or picking, but it does not guarantee that all symptoms stop immediately. Persistent symptoms need assessment. Do not wait out an infection or assume that a sore will close without treatment once you stop using.[3][2]
| Skin Problem | What It Means | What to Ask About |
|---|---|---|
| Small scratch | A shallow injury that needs protection while it heals.[15] | How should I clean and cover this area? |
| Worsening sore or painful lump | Possible infection that may need medicine or drainage.[11] | Does this need treatment today, and when should it be checked again? |
| Scar after the wound closes | Repair tissue left after deeper skin damage.[6] | Could a dermatologist help with the mark, itching, or discomfort? |
Can Meth Sores Leave Scars?
Yes. Deeper injuries can leave scars that are flat, raised, or a different color from surrounding skin. Some become less noticeable over time, while others remain. A dermatologist, a doctor who treats skin conditions, can discuss treatment for appearance, pain, itching, or restricted movement.[6]
Once a wound has healed, sun protection may help reduce discoloration. The American Academy of Dermatology recommends broad-spectrum sunscreen with SPF 30 or higher. Ask about scar care after the open wound or infection has been addressed.[15]
Getting Help for Your Skin and Meth Use
You can start with the concern that brought you here: a sore that hurts, a sensation you cannot explain, or a mark that worries you. Tell the clinician about meth use, other substances or medicines, and any picking or attempts to remove something from the skin. These details help with assessment.[9]
In published DermNet guidance updated by dermatologist Ian Coulson, clinicians are advised to “take time to listen to their complaints” when someone believes their skin is infested.[9] The guidance also calls for examining the skin and investigating possible causes. For a reader, the practical point is that the distress deserves attention while the cause is being assessed.
A way to begin the appointment
“I have been using meth, and this sore or crawling feeling is worrying me. I have been scratching or picking at it. Can you check for infection and help me understand what might be causing it?” Describe what applies to you. You can bring a trusted person or ask for instructions in writing.
Treatment Can Address the Pattern of Meth Use
Methamphetamine use disorder means a pattern of meth use that causes significant problems or distress. Effective behavioral treatments include contingency management, which offers tangible rewards for agreed treatment goals, and counseling approaches such as cognitive behavioral therapy, or CBT. CBT helps people identify and change patterns of thinking and behavior connected with use.[10]
For example, you can ask a program what happens after a missed visit, how it helps with cravings, and whether it provides contingency management. Ask how its services connect with care for your skin and any dental problems associated with meth use.
A 2025 study compared Veterans Health Administration patients receiving contingency management with matched patients who did not receive it. The treatment group had a lower adjusted risk of death over the following year. This observational finding supports further attention to the treatment, but it does not prove that rewards alone caused the difference or guarantee an individual’s outcome.[16]
Finding Care Near You
For an active wound, ask a local clinic or urgent care whether it can examine and treat the skin problem. For ongoing care, ask a meth treatment service how it handles medical needs, withdrawal symptoms, and follow-up. Confirm costs, insurance, and appointment availability directly.
Leave with answers you can use
- What do you think is causing this skin problem?
- How should I care for it at home?
- What changes mean I need urgent help?
- When should someone check it again?
- Who can help with the picking or meth use?
A wound does not have to be the only concern you bring up. If stopping meth feels difficult, explore treatment help and ask about a plan that addresses both the skin problem and the use behind it.
In the United States, call or text 988 or use Lifeline chat for suicidal thoughts or emotional distress. Call 911 for immediate danger or a medical emergency.[17]
Frequently asked questions
Why Does Meth Use Sometimes Lead to Skin Sores?
Repeated scratching or picking during meth use can damage the skin. Injection-related injuries and infections can also cause sores. A crawling sensation called formication may contribute to picking, but it is not the cause of every wound. A clinician needs to assess the particular skin problem.[1][3][2]
Where Do Meth Sores Appear on the Body?
Do Meth Sores Go Away?
Is There a Typical Healing Time for Meth Sores?
When Should You See a Doctor About Meth Sores?
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