there are many reasons you might have abdominal pain and a headache at the same time. While many of these causes are not serious, some may be. These pains can potentially be signs of a larger problem.

Both abdominal and headache pain can range from mild to severe pain, depending on the cause. Read on to learn more about potential causes and treatments.

Abdominal pain and headache causes
Some causes of concurrent abdominal pain and headaches are common, while others are rarer. Some may be mild, while others are serious. Below are some of the potential causes of abdominal pain and headache, from most to least common.

Common cold

The common cold is a viral infection of the nose and throat. Most people get a few colds per year, and recover in 7 to 10 days without treatment. However, you can treat the individual symptoms of a common cold. Other symptoms include:

stuffy or runny nose
sore throat
coughing
sneezing
low-grade fever
aches
general feeling of being unwell
Gastroenteritis

Gastroenteritis may sometimes be called the stomach flu, but it’s not actually the flu. It’s an inflammation of the lining of your intestines, caused by a virus, bacteria, or parasites. Viral gastroenteritis is the second most common illness in the United States. Other symptoms include:

nausea
diarrhea
vomiting
fever
chills
Food intolerance

A food intolerance, or sensitivity, is when you have difficulty digesting a certain type of food. It is not an allergy. Lactose intolerance is a common food intolerance. Other symptoms include:

nausea
gas
bloating
cramps
heartburn
diarrhea
vomiting
Salmonella infection

Salmonella is a foodborne illness, usually spread through meat, poultry, eggs, or milk. It is one cause of bacterial gastroenteritis. Other symptoms include:

nausea
vomiting
diarrhea
fever
abdominal cramps
Urinary tract infection (UTI)

A urinary tract infection is an infection in any part of the urinary system. It most commonly occurs in the bladder or urethra. UTIs are more common in women. They don’t always cause symptoms, but when they do, those symptoms include:

strong, persistent urge to urinate
pain while urinating
red, pink, or brown urine
cloudy urine
urine that smells bad
pelvic pain (especially in women)
Kidney stones

Urine carries waste in it. When there’s too much waste in your urine, it can form crystals and create a solid mass called a kidney stone. These stones can get stuck in your kidney or urethra.

In many cases, the stones pass naturally, but they can also back up urine and cause a lot of pain. Symptoms of kidney stones include:

severe pain on one side of your lower back
blood in your urine
nausea
vomiting
fever
chills
cloudy urine
urine that smells bad
Prostatitis

Prostatitis is an inflammation of the prostate. It can be caused by bacteria, but often the cause is unknown. Prostatitis may not cause any symptoms, but if it does, those symptoms include:

pain that lasts for at least 3 months in at least one of the following areas: between your scrotum and anus, lower abdomen, penis, scrotum, or lower back
pain during or after urination
urinating eight or more times a day
not being able to hold urine when necessary
weak urine stream
fever
chills
body aches
inability to completely empty your bladder
urinary tract infections
Mononucleosis

Mononucleosis (mono) is a contagious disease that is most common in teens and young adults. Symptoms usually last 4 to 6 weeks, but can last longer. Symptoms include:

extreme fatigue
fever
aches
sore throat
swollen lymph nodes
rash
Abdominal migraine

Abdominal migraine is a form of migraine most common in children. Most children with this condition grow out of it and develop more typical migraine headaches instead. Attacks usually last 2 to 72 hours, and may include:

moderate to severe pain around the belly button
loss of appetite
nausea
vomiting
Gastrointestinal disease

Gastrointestinal diseases include a wide range of diseases that fall into two categories: functional and structural. Functional gastrointestinal diseases are when the gastrointestinal (GI) tract looks normal but doesn’t function properly. These include constipation and irritable bowel syndrome.

Structural gastrointestinal diseases are when the bowel doesn’t look or functional normally. Examples include hemorrhoids, colon cancer, polyps, and inflammatory bowel diseases like ulcerative colitis and Crohn’s disease.

Flu

The flu is a respiratory illness caused by influenza virus. It can be mild to severe, and can even lead to death. Fatal cases are more common in the very young, the elderly, or people who are immunocompromised. Symptoms usually come on suddenly and include:

fever
sore throat
coughing
runny or stuffy nose
aches
fatigue
vomiting and diarrhea (less common symptoms)
Pneumonia

Pneumonia is an infection in the air sacs of one or both lungs. It can range from mild to life-threatening. Other symptoms include:

chest pain
cough with phlegm
fever
chills
difficulty breathing
fatigue
nausea
vomiting
diarrhea
Gallbladder inflammation

Gallbladder inflammation usually occurs when a gallstone blocks the cystic duct, which carries bile out of the gallbladder. This inflammation is also called cholecystitis and can be acute (come on suddenly) or chronic (long-term). Gallbladder inflammation requires hospitalization and may require surgery. Other symptoms include:

fever
nausea
severe and steady abdominal pain in acute cholecystitis
abdominal pain that comes and goes in chronic cholecystitis
Pelvic inflammatory disease

Pelvic inflammatory disease is an infection in a women’s reproductive organs. It’s caused by bacteria, usually from a sexually transmitted infection, and can cause fertility issues if not treated. Pelvic inflammatory disease often does not cause symptoms, but potential symptoms include:

lower abdomen pain
fever
foul-smelling vaginal discharge
pain during sex
pain while urinating
irregular menstruation, such as very long or short cycles
Appendicitis

Appendicitis is a blockage in your appendix. It can cause pressure to build up in the appendix, problems with blood flow, inflammation, and potentially cause the appendix to rupture.

MEDICAL EMERGENCY
Appendicitis is a medical emergency. If you think you may have appendicitis, go to the hospital as soon as possible. Symptoms include:

sudden abdominal pain, usually on the right side
abdominal swelling
low fever
loss of appetite
nausea
vomiting
constipation or diarrhea
inability to pass gas
Diverticulitis

Diverticulosis is when small pouches, or sacs, form in your colon and push outward through weak spots in your colon walls. When the sacs become inflamed, you have developed diverticulitis. Diverticulosis often does not cause symptoms, but diverticulitis have potential symptoms that include:

pain in your lower left abdomen
constipation or diarrhea
fever
chills
nausea
vomiting
Other causes

Other, rarer causes of concurrent abdominal pain and headache include:

cyclical vomiting syndrome, which causes recurrent episodes of severe nausea and vomiting
hyperimmunoglobulin D syndrome, a rare genetic disorder that causes high fever, headaches, abdominal pain, and loss of appetite
postural orthostatic tachycardia syndrome (POTS), a condition that affects circulation (symptoms include lightheadedness, fainting, and an increased heartbeat after standing up from reclining position)
Abdominal pain and headache after eating or drinking
If your symptoms develop 8 to 72 hours after eating or drinking, abdominal pain and a headache may be due to gastroenteritis. If the pain comes on sooner, it may be due to a food intolerance or gastrointestinal disease.


Abdominal pain and headache during pregnancy
The most common cause of abdominal pain and a headache during pregnancy is a urinary tract infection.

Abdominal pain and headache with nausea
The most common cause of abdominal pain and a headache with nausea is gastroenteritis (stomach flu).

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Abdominal pain and headache treatment
Treatment for concurrent abdominal pain and headache depends on the cause. Potential treatments and what they can be used for include:

No treatment (waiting for illness to pass). Common cold, gastroenteritis, and mononucleosis. However, you may still treat the symptoms of these illnesses, such as a runny nose or nausea. Hydration is often important.
Antibiotics. Urinary tract infections, pneumonia, gallbladder inflammation, pelvic inflammatory disease, and diverticulitis. In serious cases, you might need intravenous antibiotics.
Surgery. Severe kidney stones (in which the stones are blasted with sound waves), gallbladder inflammation (gallbladder removal), and appendicitis (appendix removal).
Pain relievers. Kidney stones, pneumonia, and gallbladder inflammation.
Drugs for migraine. Abdominal migraine. Both acute and preventive migraine treatment may be used, depending on migraine frequency and severity.
Antiviral drugs. Flu
Anti-inflammatory drugs. Inflammatory bowel disease.
Avoiding trigger foods. Constipation, irritable bowel syndrome, food intolerance.

When to see a doctor
While many causes of concurrent abdominal pain and headache, such as the common cold, do not require medical attention, others can be serious. See a doctor if you have symptoms of:

appendicitis
pelvic inflammatory disease
gallbladder inflammation
pneumonia
kidney stones
diverticulitis