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11,243 Possible Causes for HA

  • Upper Respiratory Infection

    Headache A headache is fairly uncommon with a cold. A headache is very common with the flu, present in 80% of flu cases. A headache is not unusual.[] Other symptoms include: fever fatigue headache pain during swallowing wheezing Most people with URIs know what they have.[] The NHS UK website has some useful information to help distinguish between upper and lower respiratory tract infections.[]

  • Influenza

    A combination of CH1 and pdm09 HA in a DNA vaccination neutralized pdm09 H1N1 viruses and protected mice from lethal infections by all representative H1N1 viruses.[] H3N2 has played a big role in the past five flu seasons.[] PepMix Influenza A (HA /California (H1N1)) Product Code: PM-INFA-HACal Pool of 139 peptides derived from a peptide scan (15mers with 11 aa overlap) through Hemagglutinin ([]

  • Sinusitis

    Specially in children it has been reported rarely. Fever and headache can indicate complications in children.[] RESULTS: The patient presented with unilateral proptosis, papilledema, and headache.[] headaches.[]

  • Pharyngitis

    […] children, below) Sore throat pain that persists for 2 to 3 days Sore throat with fever, headache, stomachache, or rash Trouble turning or straightening the head Problems[] Person has been in contact with others diagnosed with GAS or rheumatic fever. Headache is consistent with GAS infection.[] Take paracetamol, ibuprofen or aspirin to ease any pain and other symptoms such as a headache. Do NOT give aspirin to children under 16.[]

  • Streptococcal Infection

    In addition to throat pain, the manifestations may include chills, headache, and, in young children, abdominal pain, and vomiting.[] Abstract We previously found that 97% of children diagnosed with chronic tension-type headaches had meningismus.[] The majority of those infected by GAS either have no symptoms or develop enlarged lymph nodes, fever , headache, nausea, vomiting, weakness, and a rapid heartbeat.[]

  • Pneumonia

    Presidential candidate Hillary Clinton has pneumonia, according to a statement from her doctor , and the common illness has caused her to cancel a trip to California.[] They may not feel ill enough to demand a day of school, but they could be tired, suffering from headaches, a minor feever or a dry cough.[] If you add fever, body aches and headache that come on quickly, it could be you have the flu.[]

  • Infectious Mononucleosis

    By age 35, almost everyone has antibodies to EBV, indicating past infection. It takes more than an uncovered cough or sneeze to transmit EBV.[] In that age group, up to half of EBV infections cause mononucleosis — a disease that features fatigue, headache, fever, sore throat and swollen lymph nodes.[] Most patients with mono have a sore throat, fever, and headache and feel tired or fatigued.[]

  • Meningitis

    Abstract Retropharyngeal abscess is a potentially serious deep neck space infection occurring more frequently in children than in adults. The clinical picture of RPA is highly variable with paucity of physical findings. Prompt diagnosis of RPA especially in infants is mandatory to prevent potential fatal complications[…][]

  • Insect Bite

    Be careful, these can sting if the bite has been scratched open.[] Call a doctor if: A person has an allergic reaction, called anaphylaxis .[] The bite seems normal, but within less than an hour generalized symptoms occur, including muscle cramps, painful muscle spasms, loss of sensation or tingling, headache, dizziness[]

  • Tuberculosis

    Tuberculous meningitis presents with headache, altered mental status, fever and sometimes coma.[] […] and has bactericidal and sterilizing activity in the murine model of TB infection.[] This can cause a lasting or intermittent headache that occurs for weeks. Mental changes also are possible. Liver or kidney problems.[]

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