Clammy skin: what it means and when to get help

MedlinePlus defines clammy skin as skin that is cool, moist, and usually pale, and says it may be an emergency. This page explains common causes and basic first aid from MedlinePlus and Cleveland Clinic. It is not a substitute for medical care.

When to get help Read the sources

Seek immediate help if clammy skin comes with:

Chest, abdominal, or back pain or discomfort
Shortness of breath
Confusion, lower alertness, or a weak pulse (possible shock)
Vomiting, especially of blood, or blood in the stool
Headache or a change in thinking

Call 911 or your local emergency number. Source: MedlinePlus.

What “clammy” means

Clammy skin is cool, moist, and usually pale. MedlinePlus lists “cold sweat” as another name for it and advises contacting a health care provider or calling 911, because it may be an emergency (MedlinePlus). That is different from skin that is warm and sweaty after exercise or on a hot day, which is the body’s normal way of cooling down (MedlinePlus: sweating).

Causes MedlinePlus lists

Heart and circulation

Heart attack
Shock (low blood pressure)
Internal bleeding

Infection and reactions

Sepsis (body-wide infection)
Severe allergic reaction (anaphylaxis)
Medicine reaction

Other causes

Heat exhaustion
Low blood oxygen levels
Severe pain
Anxiety attack

Cleveland Clinic also lists low blood sugar among causes that can make you feel cold and clammy (Cleveland Clinic: cold sweats). For a person with diabetes or low blood sugar who becomes less alert or cannot be woken up, MedlinePlus says to call 911 (MedlinePlus: low blood sugar).

First aid while you get help

If you think someone is in shock

Call 911 first. Cleveland Clinic lists shock symptoms that include dizziness or confusion, fainting, excessive sweating, a weak or fast pulse, pale, cool, or clammy skin, and fast or shallow breathing (Cleveland Clinic: shock first aid).

MedlinePlus: lay the person on their back and raise their legs about 12 inches (30 centimeters).
Cleveland Clinic: keep them warm with blankets or jackets; do not give anything by mouth; do not raise the legs if they might have a head, neck, back, hip, or leg injury, and avoid moving them if they might have a head, neck, back, or spine injury.

If it may be heat exhaustion

If the person is awake and can swallow, MedlinePlus advises moving them to a cool, shaded place and having them drink plenty of non-alcoholic, non-caffeinated fluids (MedlinePlus). MedlinePlus lists cool, moist skin among later heat exhaustion symptoms, and says to call 911 right away for very high body temperature with confusion, seizures, slurred speech, or loss of responsiveness (MedlinePlus: heat emergencies).

MedlinePlus adds: always contact your provider or go to the emergency department if the symptoms do not go away quickly.

What a provider may ask

According to MedlinePlus, a provider will examine the person and may ask how quickly the clammy skin developed, whether it has happened before, whether the person was injured or is in pain, whether they seem anxious or stressed, whether they were recently exposed to high temperatures, and what other symptoms are present.

Clammy skin vs. everyday sweaty hands

Skin that suddenly turns cool, damp, and pale is a warning sign. Hands or feet that sweat heavily day after day, often since childhood or adolescence, and in one or two areas, are what the American Academy of Dermatology describes as primary hyperhidrosis (AAD). That is not an emergency, but a dermatologist can help. If you aren’t sure which you are dealing with, MedlinePlus advises calling for medical help.

FAQ

Clammy skin: quick answers

What is clammy skin?

MedlinePlus defines clammy skin as cool, moist, and usually pale skin. It lists “cold sweat” as another name and says clammy skin may be an emergency.

What causes clammy skin?

MedlinePlus lists anxiety attack, heart attack, heat exhaustion, internal bleeding, low blood oxygen, medicine reaction, sepsis, severe allergic reaction, severe pain, and shock.

When is clammy skin an emergency?

Seek immediate help if it comes with chest, abdominal, or back pain, shortness of breath, confusion, lower alertness, a weak pulse, vomiting blood, or blood in the stool.

What should I do while waiting for help?

For possible shock, MedlinePlus advises laying the person on their back and raising their legs about 12 inches unless an injury makes that unsafe. Do not give anything by mouth.

Is clammy skin the same as sweaty hands?

No. Sudden cool, pale, damp skin is a warning sign. Heavy everyday sweating of the hands or feet may be primary hyperhidrosis, which a dermatologist can treat.

Sources

Educational information, not a diagnosis or medical advice. Sources were opened and read on Nov 6, 2026.

When in doubt, get help

Clammy skin may be an emergency. If you are not sure what is causing it, call for medical help.

When to get help Read the sources

Educational information only, not medical advice, diagnosis, or treatment. If you think you may be having a medical emergency, call 911. This page does not promote any product for clammy skin.