Information about Types of Conjunctivitis
By cdc.gov
Conjunctivitis can result from many causes, including viruses, bacteria, allergens, contact lens use (especially the extended-wear type), chemicals, fungi, and certain diseases.
Infected children should be allowed to remain in school once any indicated therapy is implemented, except when viral or bacterial conjunctivitis is accompanied by systemic signs of illness. However, infected students should refrain from attending school if their behavior is such that close contact with other students cannot be avoided.
Viral Conjunctivitis
Viral conjunctivitis can be caused by the following viruses, with adenoviruses being one of the most common causes:
-Adenoviruses
-Rubella virus
-Rubeola (measles) virus
-Herpesviruses, including
-Herpes simplex virus
-Varicella-zoster virus, which also causes chickenpox and shingles
-Epstein-Barr virus, which also causes infectious mononucleosis (mono)
-Picornaviruses, such as coxsackievirus A24 and enterovirus 70 (which has caused outbreaks in other countries)
Viral conjunctivitis is highly contagious. Most viruses that cause conjunctivitis are spread through hand-to-eye contact by hands or objects that are contaminated with the infectious virus. Hands can become contaminated by having contact with infectious tears, eye discharge, fecal matter, or respiratory discharges. Viral conjunctivitis can also spread by large respiratory tract droplets.
Depending on the cause of viral conjunctivitis, some patients may have additional symptoms or conditions, such as the following:
-Common cold, flu, or other respiratory infection
-Pharyngoconjunctivial fever — a syndrome that can produce conjunctivitis as well as a fever and sore throat, and is most commonly caused by infection with adenovirus serotypes 3, 4, and 7
-Epidemic keratoconjunctivitis — a more severe type of conjunctivitis, commonly caused by infection with adenovirus serotypes 8, 19, and 37
-Acute hemorrhagic conjunctivitis — a type of conjunctivitis that is often associated with large epidemics worldwide, especially in the tropical and subtropical regions. The viruses most commonly associated with it include enterovirus 70, coxsackievirus A24, and adenoviruses.
-Herpetic keratoconjunctivitis — a type of conjunctivitis associated with herpes simplex virus and blister-like lesions on the skin; it may affect only one eye
-Rubella and rubeola (measles) — conjunctivitis can occur with these viral rash illnesses which are usually accompanied by rash, fever, and cough.
Bacterial Conjunctivitis
Acute bacterial conjunctivitis is the most common form of bacterial conjunctivitis in outpatient healthcare settings. [2] The bacteria that most commonly cause bacterial conjunctivitis in the United States are
-Staphylococcus aureus
-Haemophilus influenzae
-Streptococcus pneumoniae
-Moraxella catarrhalis
Bacterial conjunctivitis is highly contagious. Most bacteria that cause conjunctivitis are spread through direct hand-to-eye contact from contaminated hands. People can get conjunctivitis just by touching or using something that an infected person has touched or used. It can also spread by large respiratory tract droplets. Bacterial conjunctivitis is less common in children older than 5 years of age.
Topical antimicrobial therapy is indicated for bacterial conjunctivitis, which is usually distinguished by a purulent exudate.
Depending on the cause of bacterial conjunctivitis, some patients may have additional symptoms or conditions, such as the following:
-Hyperacute bacterial conjunctivitis — a more severe type of conjunctivitis that occurs suddenly, develops rapidly and is accompanied by a large amount of yellow-green discharge that returns even after being wiped away from the eye(s). It is most often caused by Neisseria gonorrhoeae in sexually active adults. This infection can lead to vision loss if not treated promptly by an eye doctor. [2]
-Chronic bacterial conjunctivitis — often develops along with another inflammatory condition (blepharitis) that promotes bacteria growth in the eyelid; flaky debris and warmth along the lid may also be present. Symptoms last for at least 4 weeks with frequent episodes. People with this condition should see an eye doctor. [3]
-Inclusion (chlamydial) conjunctivitis — more common in newborns; includes redness of the eye(s), swelling of the eyelids, and discharge of pus, usually 5 to 12 days after birth.
-Gonococcal conjunctivitis — more common in newborns; includes red eyes, thick pus in the eyes, and swelling of the eyelids, usually 2 to 4 days after birth.
-Trachoma — a chronic follicular conjunctivitis caused by Chlamydia trachomatis that leads to scarring in the conjunctiva and cornea and is the leading global cause of preventable blindness of infectious origin. It is transmitted from person to person, through shared items or by flies. Repeat infections occur in children less than 10 years of age, and it is common in developing countries. Learn more about trachoma and other hygiene-related diseases.
Allergic Conjunctivitis
Alergic conjunctivitis is common in people who have other signs of allergic disease, such as hay fever, asthma, and eczema. It is caused by the body’s reaction to certain substances to which it is allergic, such as
-Pollen from trees, plants, grasses, and weeds
-Dust mites
-Animal dander
-Molds
-Contact lenses and lens solution
-Cosmetics
Source: https://www.cdc.gov/conjunctivitis/clinical.html
Saturday, May 16, 2026
Topiramate (Topamax) - Seizures - Patient guide - Quick tips
Topiramate treatment decisions depend on seizure type, cognitive demands, hydration habits, and the pace at which side effects emerge during titration. Although it is effective across multiple seizure patterns, success often depends on starting low and increasing slowly. Many clinicians begin with a small nightly dose, then raise the amount in staged intervals to improve tolerability. This gradual approach helps reduce tingling, mental slowing, appetite suppression, and dizziness that can become more obvious with rapid increases. The correct pace is individualized, especially for students, drivers, or patients whose work depends heavily on verbal fluency. In practice, topamax-topiramate treatment decisions also account for comorbid conditions. A patient with frequent migraines may gain dual benefit, while someone with prior kidney stones or severe cognitive sensitivity may need a different approach or closer monitoring. Dose planning includes kidney function review because topiramate is cleared in part through the kidneys. Hydration counseling is routine, and clinicians often remind patients to maintain steady fluid intake to lower stone risk. Some patients also need counseling about heat intolerance or decreased sweating, particularly in warm climates or during heavy exercise. If mood changes, slowed thinking, or appetite loss become clinically significant, prescribers may slow titration, redistribute dosing, or reconsider the medication entirely. This structured review is preferable to abrupt stopping, which can provoke seizure recurrence. Topiramate may also influence contraceptive reliability at higher doses, so reproductive counseling can be part of planning in appropriate patients. Clear discussion early prevents avoidable surprises. Patients benefit from written dose calendars, refill reminders, and symptom tracking during the first several weeks. These tools make it easier to judge whether the medicine is improving seizure control without imposing too much cognitive burden. When combined with other antiseizure therapies, medication review remains important even though topiramate has fewer interaction issues than some older enzyme-inducing agents. For broader epilepsy treatment comparisons and follow-up guidance, patients can consult the seizure treatment reference page and discuss individualized options at scheduled neurology visits.
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