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Eucalyptus

Mosquitoes are insects that live all over the world. There are thousands of different species of mosquitoes; about 200 of those live in the United States.

Female mosquitoes bite animals and humans and drink a very small amount of their blood. They need protein and iron from blood to produce eggs. After drinking blood, they find some standing water and lay their eggs in it. The eggs hatch into larvae, then pupae, and then they become adult mosquitos. The males live for about a week to ten days, and the females can live up to several weeks. Some female mosquitoes can hibernate in the winter, and they can live for months.

What health problems can mosquito bites cause?

Most mosquito bites are harmless, but there are times when they can be dangerous. The ways that mosquito bites can affect humans include:

  • Causing itchy bumps, as an immune system response to the mosquito's saliva. This is the most common reaction. The bumps usually go away after a day or two.
  • Causing allergic reactions, including blisters, large hives, and in rare cases, anaphylaxis. Anaphylaxis is a severe allergic reaction that affects the whole body. It is a medical emergency.
  • Spreading diseases to humans. Some of these diseases can be serious. Many of them do not have any treatments, and only a few have vaccines to prevent them. These diseases are more of a problem in Africa and other tropical areas of the world, but more of them are spreading to the United States. One factor is climate change, which makes the conditions in some parts of the United States more favorable to certain types of mosquitoes. Other reasons include increased trade with, and travel to, tropical and subtropical areas.
Which diseases can mosquitoes spread?

Common diseases spread by mosquitoes include:

  • Chikungunya, a viral infection that causes symptoms such as fever and severe joint pain. The symptoms usually last about a week, but for some, the joint pain may last for months. Most cases of chikungunya in the United States are in people who traveled to other countries. There have been a few cases where it has spread in the United States.
  • Dengue, a viral infection that causes a high fever, headaches, joint and muscle pain, vomiting, and a rash. Most people get better within a few weeks. In some cases, it can become very severe, even life-threatening. Dengue is rare in the United States.
  • Malaria, a parasitic disease that causes serious symptoms such as high fevers, shaking chills, and flu-like illness. It can be life-threatening, but there are drugs to treat it. Malaria is a major health problem in many tropical and subtropical areas of the world. Almost all cases of malaria in the United States are in people who traveled to other countries.
  • West Nile Virus (WNV), a viral infection that often has no symptoms. In those that do have symptoms, they are usually mild, and include fever, headache, and nausea. In rare cases, the virus can enter the brain, and it can be life-threatening. WNV has spread across the continental United States.
  • Zika Virus, a viral infection that often does not cause symptoms. One in five infected people do get symptoms, which are usually mild. They include a fever, rash, joint pain, and pink eye. Besides being spread by mosquitoes, Zika can spread from mother to baby during pregnancy and cause serious birth defects. It can also spread from one partner to another during sex. There have been a few outbreaks of Zika in the southern United States.
Can mosquito bites be prevented?
  • Use an insect repellent when you go outdoors. Choose an Environmental Protection Agency (EPA)-registered insect repellent. They are evaluated to make sure they are safe and effective. Make sure that the repellant has one of these ingredients: DEET, picaridin, IR3535, oil of lemon eucalyptus, or para-menthane-diol. It is important to follow the instructions on the label.
  • Cover up. Wear long sleeves, long pants, and socks when outdoors. Mosquitoes may bite through thin fabric, so spray thin clothes with an EPA-registered repellent like permethrin. Don't apply permethrin directly to skin.
  • Mosquito-proof your home. Install or repair screens on windows and doors to keep mosquitoes out. Use air conditioning if you have it.
  • Get rid of mosquito breeding sites. Regularly empty standing water from your house and yard. The water could be in flowerpots, gutters, buckets, pool covers, pet water dishes, discarded tires, or birdbaths.
  • If you plan to travel, get information about the areas you will be going to. Find out whether there is a risk of diseases from mosquitoes, and if so, whether there is a vaccine or medicine to prevent those diseases. See a health care provider familiar with travel medicine, ideally 4 to 6 weeks before your trip.


WARNING: All medicines, drugs, plants, chemicals or medicial precedures below are for historical reference only. Many of these treatments are now known to be harmful and possibly fatal. Do not consume any plant, chemical, drug or otherwise without first consulting a licensed physician that practices medine in the appropriate field.

Felter's Materia Medica on Eucalyptus

EUCALYPTUSEUAN12
   The leaves of Eucalyptus Globulus, Labillardiere. Collected from the older parts of the tree. (Nat. Ord. Myrtaceae.) A native tree of Australia; cultivated elsewhere. Common Name: Blue Gum Leaves. Principal Constituents.—A volatile oil (Oleum Eucalypti) composed largely of eucalyptol (cineol) (C10H18O), and a resin. Preparations.—1. Oleum Eucalypti, Oil of Eucalyptus (contains a large proportion, not less than 70 per cent, of eucalyptol). it is colorless or pale yellow, aromatic and pungent, and has a spicy, cooling taste. Dose, 1 to 10 drops. 2. Eucalyptol, a neutral body derived from the oil. It is a colorless, spicy, aromatic fluid, with a cooling taste. Dose, 1 to 10 drops. 3. Specific Medicine Eucalyptus. Dose, 5 to 30 drops. Specific Indications.—Cold extremities and cold perspiration; perspiration during chill; sense of coldness and weight in the intestines; chronic mucous or muco-purulent discharges; pus in the urine; pasty, bad-smelling tongue; fetid excretions; fetid sore throat; fetid catarrhal states of the broncho-pulmonary tract; chronic ague with exhaustive discharges. Action.—Eucalyptus, and its oil and derivative, are gentle stimulants when given in small doses. Large doses are irritant and may cause gastrointestinal inflammation and renal congestion. Muscular prostration occurs from overdoses. Blood pressure is lowered by full doses. All the secretions are stimulated when these agents are given in medicinal amounts. All preparations of Eucalyptus are considered antiperiodic and the planting of groves and trees in miasmatic swamps and low grounds is thought to render the air free from malarial miasm. The probabilities are that the enormous quantities of water absorbed by these trees does good by drying the swamps and thus making them poor breeding places for malaria-bearing insects. It is said that a part of the deadly Roman Campagna has been rendered habitable by the introduction of Eucalyptus groves. Therapy.—External. Eucalyptus preparations are antiseptic and disinfectant. They may be sprinkled or sprayed upon offensive material and used to disinfect and deodorize the sick room. They also may form an ingredient of antiseptic poultices and ointments. Dropped upon hot water, or used in suitable oil dilution in sprays, they are useful as throat and pulmonary antiseptics and stimulants. Eucalyptol is especially much employed in subacute inflammations and chronic diseases of the bronchopulmonic tract, with fetor, relaxation and abundant secretions. Used upon cancerous surfaces they mask the fetid odor and give some relief from pain. The following is an ideal vaginal wash for offensive leucorrhea: Rx. Sea Salt, 1 lb.; Fluidextract of Eucalyptus or Specific Medicine Eucalyptus, 1/2 fluidounce. Mix in a glass or tin container. Sig.: One tablespoonful to 1 pint of hot water, and inject with a glass syringe. All preparations of eucalyptus may be used from full strength to any desired dilution upon old ulcers, wounds, gonorrhoeal discharges, ozoena, septicemia, and gangrene; all with free but fetid discharges. Inhalations of them are especially useful in pulmonary gangrene. Internal. Eucalyptus is a fine stimulating expectorant for bronchopulmonary catarrhal disorders, when no very active inflammation is present. It restrains discharges, facilitates expectoration, and deodorizes and antisepticizes the sputum. Chronic bronchitis, bronchorrhea, and the debility, with difficult expectoration, lingering in the wake of bronchopneumonia and lobar pneumonia are conditions in which it is of very great value. Agents of this type, which may be compared to the turpentines, and which influence the respiratory membranes, usually are valuable for similar uses in the urino-genital tract. Thus we find eucalyptus an alterative and antipyic in pyelitis and in catarrhal and purulent cystitis, particularly in the aged. Being eliminated by all the mucous surfaces, it exerts its antiseptic influence upon them in all parts of the body. While the oil and eucalyptol are popular with many, we prefer the specific medicine or the fluidextract for most purposes. Eucalyptus is a stimulating antiseptic for the angina of scarlatina, for which by some it is administered internally. This should be done with great care, however, for the drug is liable to produce congestion of the kidneys, one of the dreaded complications which is easily provoked in the acute exanthemata. If acute desquamative nephritis is present it should not be employed; in the advanced stage of chronic nephritis with very marked fetor in the urine, and scanty secretion of urine, very small doses of eucalyptus may be cautiously tried. Eucalpytus and its preparations are distinctly contraindicated when acute inflammation of any part exists. The antimalarial properties of eucalyptus are taken advantage of in cases of malarial infection that do not respond to quinine or in which the quinine has an otherwise undesired effect. The more chronic the cases—without distinct cycles—the better the drug seems to act. It is also naturally used for many of the complications or results of chronic malarial cachexia, as periodic headache and neuralgia. It is only in occasional cases of malarial fever that it does a great deal of good, especially acting best if there are exhaustive discharges, but it is never without some beneficial power. It is not to be compared to cinchona medication in the ordinary run of malarial fevers. Used according to indications as given above, eucalyptus is a very satisfactory and pleasant medicine. It is best given in syrup or glycerin.1


References

1) Felter, Harvey Wickes, 1922, The Eclectic Materia Medica, Pharmacology and Therapeutics, Cincinnati, Ohio.