Premenstrual Syndrome: Symptoms, Causes, Treatment, and PMS

A person may experience:

• bloating;
• breast tenderness;
• headaches;
• fatigue;
• irritability;
• mood changes;
• food cravings;
• difficulty sleeping;
• difficulty concentrating.

Symptoms usually improve after menstruation begins.

PMS is different for every person. Some have only one or two mild symptoms, while others experience several symptoms that affect daily life.

• premenstrual, meaning before menstruation;
• syndrome, meaning a group of symptoms that tend to occur together.

Examples include:

• She experiences premenstrual syndrome before most periods.
• PMS symptoms usually improve after menstruation begins.
• The clinician asked her to track symptoms throughout the cycle.

Common expressions include:

• PMS symptoms;
• severe PMS;
• premenstrual mood changes;
• PMS treatment;
• PMS-related bloating;
• premenstrual irritability.

A common pattern is:

1. symptoms appear after ovulation;
2. symptoms become stronger before menstruation;
3. symptoms improve when bleeding begins or shortly afterward;
4. there is usually a symptom-free or much milder period earlier in the cycle.

This recurring timing helps distinguish PMS from symptoms that are present throughout the month.

These may include:

• bloating;
• breast tenderness;
• headache;
• acne;
• fatigue;
• joint or muscle discomfort;
• temporary weight change from fluid retention;
• constipation or diarrhea;
• changes in appetite.

The symptoms may vary from one menstrual cycle to another.

Physical symptoms often result from normal hormonal and physiological changes rather than a serious medical condition.

Possible symptoms include:

• irritability;
• sadness;
• anxiety;
• mood swings;
• feeling overwhelmed;
• reduced concentration;
• social withdrawal;
• sleep changes;
• food cravings.

These symptoms are generally milder than those associated with premenstrual dysphoric disorder, or PMDD.

However, even moderate PMS can affect relationships and daily functioning.

PMS appears to be related to the body’s response to normal hormonal changes during the menstrual cycle.

Hormones involved include:

• estrogen;
• progesterone.

Brain chemicals such as serotonin may also influence emotional symptoms.

PMS does not necessarily mean hormone levels are abnormal. Some people may simply be more sensitive to normal hormonal changes.

Premenstrual Syndrome

PMS may cause:

• irritability;
• bloating;
• breast tenderness;
• mild depression;
• headaches;
• food cravings.

Premenstrual Dysphoric Disorder

PMDD generally involves much more severe emotional symptoms, such as:

• intense irritability;
• severe depression;
• marked anxiety;
• major mood swings;
• significant disruption of daily functioning.

PMDD is a recognized mood disorder and requires a more specific diagnostic pattern.

PMS mainly occurs before menstruation and may involve emotional and physical symptoms.

Dysmenorrhea refers specifically to painful menstruation, especially cramps that occur around the beginning of the period.

A person can experience:

• PMS without significant cramps;
• dysmenorrhea without PMS;
• both conditions together.

Diagnosis usually depends on:

• symptoms;
• timing within the menstrual cycle;
• repetition across several cycles;
• effect on daily life.

A clinician may ask the person to keep a symptom diary.

Tracking can help show whether symptoms consistently appear before menstruation and improve afterward.

Other conditions may need to be considered if symptoms occur throughout the month.

Examples include:

• depression;
• anxiety disorders;
• migraine;
• thyroid disease;
• irritable bowel syndrome;
• chronic fatigue conditions;
• endometriosis.

A person may also have a condition that becomes more noticeable before menstruation.

This is different from having symptoms only during the premenstrual phase.

A diary may record:

• mood;
• sleep;
• headaches;
• bloating;
• breast tenderness;
• food cravings;
• menstrual bleeding;
• sexual desire;
• pain.

Tracking for at least a few cycles can help distinguish occasional symptoms from a consistent PMS pattern.

It can also help evaluate whether treatment is working.

Possible approaches include:

• regular exercise;
• adequate sleep;
• stress management;
• dietary changes;
• pain-relief medication;
• hormonal contraception;
• treatment of specific mood symptoms.

Some people need only simple lifestyle measures.

Others may benefit from medical treatment when symptoms regularly interfere with daily functioning.

Potential benefits include:

• improved mood;
• reduced fatigue;
• better sleep;
• less bloating;
• reduced stress.

Other helpful habits may include:

• maintaining a regular sleep schedule;
• reducing excessive alcohol;
• eating balanced meals;
• limiting excessive salt if fluid retention is a problem;
• using relaxation techniques.

Lifestyle changes should support, not replace, medical evaluation when symptoms are severe.

Options can include:

• anti-inflammatory pain medicines for cramps or headache;
• hormonal contraception;
• antidepressant medication in selected severe cases;
• treatment for migraine or other associated conditions.

Medication choice depends on:

• symptoms;
• contraceptive needs;
• medical history;
• other medications;
• personalpreference.

A clinician can help determine which option is appropriate.

Possible methods include:

• combined oral contraceptives;
• hormonal vaginal rings;
• contraceptive patches;
• some progestin-containing methods.

Mood responses to hormonal contraception vary.

Some people improve, while others notice no change or experience different symptoms.

A person may experience:

• increased hunger;
• cravings for sweet foods;
• cravings for salty foods;
• changes in eating patterns.

These changes may be influenced by hormones, mood, and energy regulation.

Occasional cravings are common, but severe or distressing eating changes deserve separate attention.

Possible experiences include:

• difficulty falling asleep;
• waking frequently;
• sleeping more than usual;
• daytime fatigue.

Poor sleep can also worsen irritability, concentration problems, and emotional sensitivity.

Keeping a consistent sleep schedule may help some people.

Some people may experience:

• lower libido;
• increased libido;
• breast sensitivity;
• bloating;
• irritability;
• pelvic discomfort;
• reduced interest in touch.

Others notice little change.

Sexual response varies naturally across the menstrual cycle.

Partners may benefit from communicating about comfort and desire rather than assuming that PMS affects everyone in the same way.

Possible effects include:

• increased irritability;
• greater sensitivity to criticism;
• reduced patience;
• desire for more personal space;
• reduced interest in social activity.

Recognizing a cyclical pattern may help a person and their partner prepare for more difficult days.

However, PMS should not be used to dismiss a person’s feelings or excuse harmful behavior.

Because symptoms often occur after ovulation, they may reflect normal cyclical hormonal changes.

However, a person with highly irregular periods or absent ovulation may experience different or unpredictable premenstrual symptoms.

Fertility depends on many other factors, including:

• ovulation;
• egg quality;
• sperm health;
• fallopian-tube function;
• age.

They may become stronger or weaker during:

• adolescence;
• reproductive adulthood;
• after pregnancy;
• breastfeeding;
• perimenopause.

Hormonal contraception may also alter symptoms.

Some people notice more pronounced PMS symptoms as they approach menopause because cycles become hormonally less predictable.

Professional evaluation is important when premenstrual symptoms involve:

• severe depression;
• suicidal thoughts;
• inability to function;
• extreme anxiety;
• major relationship disruption.

Mental-health symptoms should not be dismissed simply because they occur before menstruation.

PMS and PMDD are the same.
No. PMDD is generally much more severe and causes greater functional impairment.

PMS always causes depression.
No. Symptoms vary and may be mainly physical.

PMS means hormone levels are abnormal.
Not necessarily. Symptoms may result from sensitivity to normal hormonal changes.

Everyone who menstruates has PMS.
No. Some people have few or no premenstrual symptoms.

PMS excuses hurtful behavior.
No. A medical condition can explain symptoms without removing responsibility for behavior.

1. Premenstrual syndrome may cause physical and emotional symptoms before menstruation.
2. Her PMS symptoms included bloating and irritability.
3. Can premenstrual syndrome affect sexual desire?
4. She tracked her mood for several menstrual cycles.
5. PMS usually improves after menstruation begins.
6. Premenstrual dysphoric disorder is generally more severe than PMS.
7. Regular exercise helped reduce some of her premenstrual symptoms.
8. Understanding premenstrual syndrome helps readers distinguish ordinary cyclical symptoms from PMDD, dysmenorrhea, and other menstrual conditions.

Not everyone who experiences PMS identifies as a woman. Transgender men, nonbinary people, and some intersex people may also menstruate and experience premenstrual symptoms.

Understanding PMS supports inclusive menstrual healthcare and helps people recognize that cyclical physical and emotional changes can affect both sexual well-being and everyday life.