Although the absence of menstruation (amenorrhea) is seldom serious, the condition can often be linked to an underlying problem requiring treatment.
Antiphospholipid syndrome is a rare disorder in which your immune system attacks certain blood proteins, creating clotting abnormalities that can cause stroke and pregnancy complications.
Aplastic anemia occurs when your bone marrow stops producing enough new blood cells. It's a serious problem, but treatments are available.
Brucellosis is an infectious disease that spreads from animals to people, mainly via unpasteurized dairy products. Travelers should take special care to avoid infection.
Concussions can be serious injuries that need sufficient time to heal.
You normally lose about 10 cups (2.4 liters) of water every day — much more during exercise or illness. Learn how to stay hydrated.
Encephalitis is inflammation of the brain usually caused by a viral infection. Severe cases can cause brain damage, even death.
Don't be in a hurry to treat a low-grade fever — it's probably helping your body fight infection. High or lasting fevers may need medical attention.
Fatigue and widespread pain are common with fibromyalgia, a condition affecting mainly women. Treatment often focuses on managing symptoms with medication and self-care.
Hantavirus pulmonary syndrome is initiated by a rodent-carried virus that infects the lung tissues, bringing on flu-like symptoms, respiratory problems and even death.
Iron deficiency anemia may leave you feeling sapped of energy. This condition is especially common in women. Iron supplements usually help.
Most people exposed to listeria don't become ill. But for those at risk of a listeria infection — a foodborne illness — the consequences can be severe.
Nasal polyps, inflammation-related growths in the nasal passages or sinuses, can block the flow of air and fluid in your nose.
One of the most feared diseases of the 20th century, polio has been eradicated from the developed world but remains a threat in less developed nations.
Polycythemia vera is a rare blood disorder in which a person's bone marrow makes too many blood cells.
Polymorphous light eruption is a sun-induced skin rash affecting people who develop a sensitivity to sunlight.
Rabies is a serious infection that usually spreads through the bite of an animal infected with the virus.
Salmonella infection will cause only diarrhea and stomach pain in some people, but for infants and immunocompromised people, this bacterial illness can cause life-threatening complications.
Scarlet fever is a bacterial infection that causes a rash, fever and sore throat and usually affects children and adolescents.
Serotonin syndrome — caused by mixing some antidepressants and other medications — can be life-threatening if left untreated.
While mild traumatic brain injury generally results in few long-term problems, more severe injury can cause several physical, emotional, behavioral, communication and cognitive problems.
May 04, 2016
- Ferri FF. Ferri's Clinical Advisor 2016. Philadelphia, Pa.: Mosby Elsevier; 2016. https://www.clinicalkey.com. Accessed Feb. 29, 2016.
- Digre KB. Headaches and other head pain. In: Goldman-Cecil Medicine. 25th ed. Philadelphia, Pa.: Saunders Elsevier; 2016. http://www.clinicalkey.com. Accessed March 2, 2016
- Secondary headaches. American Headache Society Committee for Headache Education. http://www.achenet.org/resources/secondary_headaches/. Accessed March 2, 2016.
- Wong ET, et al. Clinical presentation and diagnosis of brain tumors. http://www.uptodate.com/home. Accessed March 2, 2016.
- NINDS meningitis and encephalitis information page. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/encephalitis_meningitis/encephalitis_meningitis.htm. Accessed March 3, 2016.
- NINDS stroke information page. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/stroke/stroke.htm. Accessed March 3, 2016.
- Cutrer FM. Primary cough headache. http://www.uptodate.com/home. Accessed March 3, 2016.
- Garza I, et al. Overview of chronic daily headache. http://www.uptodate.com/home. Accessed March 3, 2016.
- Friedman BW, et al. Headache emergencies: Diagnosis and management. Neurological Clinics. 2012;30:43.
- Headache hygiene tips. American Headache Society Committee for Headache Education. http://www.achenet.org/resources/trigger_avoidance_information /. Accessed March 8, 2016.
- Flu symptoms & severity. Centers for Disease Control and Prevention. http://www.cdc.gov/flu/about/disease/symptoms.htm. Accessed March 8, 2016.
- Cutrer FM, et al. Cough, exercise, and sex headaches. Neurologic Clinics. 2014:32:433.
- Bajwa ZH, et al. Evaluation of headache in adults. http://www.uptodate.com/home. Accessed March 2, 2016.
- Evans RW, et al. Postconcussion syndrome. http://www.uptodate.com/home. Accessed March 2, 2016.
- Green MW. Secondary headaches. In: Continuum Lifelong Learning Neurology. 2012;18:783.
- Simon RA. Allergic and asthmatic reactions to food additives. http://www.uptodate.com/home. Accessed March 8, 2016.
- External compression headache. International Headache Society. http://ihs-classification.org/en/02_klassifikation/04_teil3/13.10.00_facialpain.html. Accessed March 8, 2016.
- Seifert T. Headache in sports. Current Pain and Headache Reports. 2014;18:448.
- The elusive hangover cure. British Columbia Drug and Poison Information Centre. http://dpic.org/article/professional/elusive-hangover-cure. Accessed March 8, 2016.
- Headache: Hope through research. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/headache/detail_headache.htm#142883138. Accessed March 8, 2016.
- When to see a physician for your headache. National Headache Foundation. http://www.headaches.org/when-to-see-a-physician-for-your-headache/. Accessed March 8, 2016.