Synonyms in a broader sense

Crow's eye, corpse thorn

Medical: Clavus / Klavus

English: corn


    Under a Corns one understands an overgrowth of the Cornea (Hyperkeratosis). This is usually round and between 5 and 10 millimeters in size. In the middle there is a mostly yellowish translucent horn wedge (which represents the "eye“Represents), the tip of which is directed downwards and which by exerting pressure on the deeper tissue Pain can lead. As a rule, the deeper this spur, the more painful the corn is. The callus formation comes about when the corresponding part of the body becomes thicker and harder skin tries to better protect against external influences. The most common trigger is chronic pressure or friction, especially on skin near the bones.

    In principle, corns can develop anywhere on the body, but they are a preferred location Feet or toes. On the sole of the foot (so-called plantar clavi) they usually arise near the heads of the metatarsals. The corns on the toes are often found near the toe joints (dorsal or digital clavi).

    As a rule, corns pose no further health risk and are therefore usually only treated if there is an increased risk of developing complications or if they cause the patient a pronounced feeling of discomfort.


    Because the corneal thickening is often severe eye from the bird, this change has been known as corn or corn since the 16th century. Crow's eye known. The name corpse thorn comes from the fact that it is dead tissue.

    Frequency distribution / epidemiology

    Women suffer a little more often Corns as men. This is because they tend to wear unsuitable footwear and put unnecessary strain on their feet and toes. Also, patients with a Diabetes mellitus (Diabetes) or poor circulation have an increased risk of developing corns.

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    The basis for creating a Corn is the constant friction or chronic pressure on a specific part of the body. The stronger and the longer these factors persist, the more likely they will lead to a corn. This is because certain cells form the outermost layer of the skin Epidermis (so-called Corneocytes) more calluses form on the affected area in order to protect themselves from the additional stress. The most common causes for a corresponding pressure are incorrect, i.e. usually too tight, shoes, misalignments of foot or toes or protruding bones or joints. Other orthopedic features such as arthritic changes in the joints or features such as a flat or splayfoot can further promote the development of a corn. In addition, a virtually infinite number of other factors are potential triggers, such as some sports, the (regular, long-term) playing of a musical instrument or a game console, and so on.
    For example, a corn on the middle finger can simply arise from the fact that you write a lot and a certain part of the finger is therefore exposed to the pressure of the writing implement for a long period of time.

    Especially between the toes, poor ventilation and / or insufficient drying can lead to a breakdown soft corn come. These are often particularly painful.

    In rare cases, calluses develop without the area being exposed to increased friction or pressure. Then it may be that the Hyperkeratosis caused by another disease (for example by Syphilis or leprosy), the result of poisoning (for example by arsenic) or a viral infection.



    As a rule, i.e. with an uncomplicated one Corns without complications, the only symptom is often the cosmetic change in a specific, well-circumscribed region of the skin. However, this is not infrequently accompanied by more or less severe pain. This can be explained by the fact that the central horn wedge penetrates deeper and deeper layers of skin over time and eventually to free ones Nerve endings hits and this irritates what is perceived as painful. This can cause the patient pain To run difficult or even impossible and it may be more or less restricted in several daily activities, always depending on the location of the corn. Long-term irritation can lead to inflammatory reactions against the horn wedge, which are impressive due to the typical defense reactions to foreign bodies, including the symptoms of reddening and pus formation.

    In the diabetic or in people who suffer from neuropathy for other reasons, the pain sensation is weakened, which initially appears practical, since the pain that occurs is much weaker or even not noticed at all. There a Corns Because of this, however, it may not be noticed until very late, for example only when it is already in a very advanced stage, there can be more serious changes, such as the formation of a fistula or one Ulcer entail. Sometimes problems arise from overlying infections, which ultimately results in diabetic gangrene (fire) can result.

    Corns between your toes

    Corns often occur between the Toes on. The reason for this is that the Space between your toes is very tight. As a result, the toes keep rubbing against each other. The amount of friction on the toes varies from person to person. Ideally, there is virtually no friction between the toes. With malpositions the toes are common permanent pressure points. Corns then mainly develop on these. But also by one general misalignment of the feet can it to unnatural friction points come between your toes. Once a corn has developed in the area between the toes, work must be done symptomatically, but also treating the cause. The Removal of the existing corn can with Creams, Tinctures and special plasters respectively. Because the area between the toes difficult to deal with should be considered a professional foot care to claim something. Corns can be very painful, especially between the toes.


    Corns occur in a lot of people. They often arise because of Incorrect loads or. chronic states of pressure at one point on the foot. Compared to Warts are they not caused by a viral infection. Corns are only about increased corneal growth at the affected area. For the sake of aesthetics and the occurrence of pain, corns can be treated.

    Basically, corns are not hazardous to health. However, their occurrence can be a sign that there is an incorrect load. In consultation with a doctor, attempts can be made to reduce or remove this improper stress, e.g. If the foot is misaligned or a single toe is misaligned, an insert can restore a more natural position. As a result, the pressure conditions are changed in such a way that no further corns should appear in the future.

    To distance of the existing corn offer themselves band Aid with and without additives, Corneal rasps, various Tinctures and ultimately also the controlled one treatment in the Foot care on. Treatment by a specialist is particularly recommended for people with diseases such as diabetes or des rheumatic form circleas these are possible causes, such as improper loading, due to the potentially damaged annoy (Polyneuropathy) no longer perceive. Permanent treatment should be used here Podiatrists to ensure that the Feet are not affected by any more complicated diseases.

    Under no circumstances should those affected try to remove the corn themselves with sharp objects or instruments! There is a risk here that doing so Pathogens get into the wound and next to a local inflammation in the worst to one Blood poisoning (sepsis) to lead.

    Corn plasters

    Corn plasters can be purchased without a doctor's prescription. Various manufacturers offer them at relatively low prices. The aim of the application is that the affected area through the plaster is padded and thereby the friction or the pressurewhich led to the formation of the corn, is reduced. The padding of some plasters is done through the special shape. you are shaped like a ringthat lies around the corn so that the pressure that is otherwise on the corn is distributed to the surrounding area. Many patches also contain one type gelwhich leads to the skin on and around the corn is softened. The idea behind this is that the corn can be removed more easily this way. The Ablation is carried out with a corneal planer or rasps. Other patches contain additional Salicylic acid or others rather weaker acids. These acids lead increasingly to Softening of the skin and corn. The application above all for longer lasting and more keratinized corns on. However, it is important to ensure that the use of patches with additives such as salicylic acid is not long-term, as it not only attacks the corn, but also the surrounding skin.

    Home remedies

    One of the first measures is in Softening the corn and the surrounding skin. On the one hand, that can do warm water baths happen that between 15 and 30 minutes can last. Furthermore, these can be mixed with other substances, such as various Oil be moved.

    On the other hand, the corn and its surroundings can with Moisturizer rubbed in and then an envelope with it Household foil be made. This also softens the skin. After both applications, the corn can gently with one pumice be removed.

    Other common home remedies are for example Onions and Lemons. The juice of both should soften the skin in appropriate places.

    Another possibility is to use Aspirin tablets. Of these, several (up to five pieces) are crushed and ground and then with Lemon juice be mixed up. This mixture then comes on the corn. The reason for using aspirin lies in the salicylic acid it contains, which is also present in well-known drugs from pharmacies.


    The very first step to remove a corn is Softening of the respective skin region on. This is done through warm water baths and various other budget funds. By softening the skin, the corn can be removed more easily and the environment more gently. Should be the distance with Corneal rasps or -plane not be effective and the corn does not go away then seeing a podiatrist (Foot care) help.

    Often occurs in places that have been or are exposed to a lot of pressure strong cornificationsthat kind of core in the depth of the Foot form. These deep cornifications are common harder to remove. For this, the superficial layers are first removed. In the next step, the core is approached in depth with a scalpel or knife. For this, this can also be softened again first. Depending on its depth and shape, a corn cannot be removed all at once, but needs to be several sessions with an appropriate specialist. Especially in patients with diabetes or sensory disturbances in the feet, it is of great relevance that the removal is carried out by a specialist and that a regular check takes place afterwards.


    The most important precautionary measure is the wearing of healthy, appropriate footwear, which means that the shoes should not be too tight and preferably have flat soles. When the occasion arises, it also includes wearing orthopedic insoles. Another component relates to foot care, which includes, for example, regular inspections of the feet, callous reduction by using a pumice stone and thorough drying of the feet.

    You might also be interested in this topic: Home remedies for calluses


    The prognosis for corns is very good; after appropriate treatment, experience has shown that they usually heal completely and relatively quickly. Only in a few cases do problems such as ulcers or infections arise, which then require further treatment. diabetic and patients with Circulatory disorders are most likely to develop complications.


    Corns are areas of skin that multiply due to chronic friction or pressure Cornea forms. Its central spur grows deeper and sooner or later triggers pain in the patient, which, however, quickly disappears again when the skin changes are treated. The preferred locations for this problem are the feet, since they are predisposed to being exposed to excessive pressure over a long period of time due to inappropriate footwear or the presence of foot malpositions (or a combination of the two factors).

    Read more on the topic: Corn plasters