Substances & Homeopatic Remedies

    Cimex lectularius

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    Acanthia lectularia


    L. cimex (acc. cimicem) "bedbug."


    Traditional name

    Italian: Cimice dei letti
    English: Bedbug
    German: Bettwanze, Schnabelkerve
    Hindi: Khatmal

    Used parts

    Whole insect


    Animalia; Insecta (Hexapoda) - Insects; Rhynchota / Hemiptera; Heteroptera - Bugs; Gymnocerata



    Original proving

    Proved and introduced by Wahle; Allen: Encyclop. Mat. Med. Vol. III, 293; Hering: Guiding Symptoms, Vol. IV, 141.

    Description of the substance


    Nocturnal household pest of dark brown colour, wingless, with a flat oval body 6 - 8 mm long and 3 - 4mm broad, inhabiting narrow crevices and hide outs where they retire during the day. The mouth parts are of piercing and sucking type. The labrum and labium are elongated to form a rostrum or break, containing long needleshaped stylets, which are the modified mandibles and lacinia of the maxilla. The maxillary stylets form the food channel. Both sexes are blood suckers. Ocelli are absent, tarsi 3 - joined, rostrum lying in a ventral groove, metamorphosis incomplete. Lays about 200 eggs in its life span. Eggs are white, recticulately scuputred with an operculum in the cherion (shell). Nymphs resemble the adult in general appearance and become adults in 2 - 8 weeks. A characteristic nauseating odour due to a secretion from the stink glands is associated with the bed bug.

    Insect of the Hemiptera that infests houses and beds.
         Bedbugs are cosmopolitan, blood-sucking insects linked to humans and many animals, particularly birds and bats. The normal bedbugs usually occurs as a human parasite.
         The adult bedbug is flat and has a more or less oval shape. It is approx. 5 mm. long and 3 mm. wide. The body is covered with fine, short hair and is usually brown. Shortly after drinking blood, however, it is reddish, or dark red to violet, if the stomach still contains blood from a previous meal. When bedbugs need blood, they are as thin as paper, but after a generous meal, they are much fatter and can be even spherical. They have lost the ability to fly; in fact, all they have left are a few rudimentary stumps on the middle segment of the chest area.
         These insects were known to the ancient Greeks and Romans, who ascribed many medicinal powers to them when taken with a drink of water or a glass of wine. Treatment of malaria and urinary infection.
         The female lays two or three eggs a day, up to a total of 150 to 200. The eggs are dropped into cracks and crevices and firmly attached using a glue-like substance. In the case of a temperature of 28º C, the eggs hatch after five or six days. The insect pumps saliva in the wound at the same time it is sucking the blood. This saliva ensures that the host’s blood does not clot. The intense irritation that followed a bite from a bedbug is most probably caused exclusively by the saliva, because the wound itself is too small to cause any trouble. After its meal, from which it needs a maximum of 12 minutes, the bug has consumed about six times its body weight in blood; this is somewhat less in the cold season.
    Bedbugs are exclusively nocturnal. They are only visible in daylight if they are really starving. Laboratory studies have shown that a bedbug refuses to suck food that is otherwise suitable if there is no skin which it can first puncture.
         Adult bedbugs can fast for a year. Large populations survive best in centrally-heated buildings, in which particularly the bedrooms never have very low temperatures in the winter. In unheated buildings, the population drop drastically in the winter.
         Bedbugs are attracted by the host’s heat and odour. They also tend to gather in places where their own sort are already present. They are attracted by the smell of glandular discharges and secretion of their fellows. As is the case with many bugs, they emit a penetrating odour.
         The homoeopathic provings with Cimex are unclear and produced few specific symptoms. The infamy of the bedbug in the case of malaria is somewhat inexplicable since in those days people did not yet know that insects could function as the carriers of pathogenic organisms. Apart from this, the irritation of the bites causes numerous symptoms, particularly at night, on which the drug picture is probably based, especially the itch and the sleeplessness.

    La c. dei letti (Cimex lectularius), lunga pochi millimetri, rossiccia, appiattita, è parassita dell'uomo, oltre che di talune specie animali. Frequenta tra l'altro le abitazioni poco pulite e sovraffollate. La sua puntura, dolorosa, è sospettata come mezzo di trasmissione di malattie di varia natura.
    Conduce un'esistenza prettamente notturna; le femmine depongono le uova, in gruppi di alcune centinaia, nelle fessure dei muri, dei mobili, ecc. Fra le numerose c. parassite di piante, la c. delle nocciole (Genocerus acuteangulatus) appartiene alla fam. Coreidi ed è lunga sino a 15 mm.