Prescription cascade is the process whereby the side effects of drugs are misdiagnosed as symptoms of another problem, resulting in further prescriptions and further side effects and unanticipated drug interactions, which itself may lead to further symptoms and further misdiagnoses. This is a pharmacological example of a feedback loop. Such cascades can be reversed through deprescribing.
Over the past 20 years, spending on prescription drugs has increased drastically. This can be attributed to several different situations: There is the increased diagnosis of chronic conditions; and the use of numerous medications by the older population; and an increase in the incidence of obesity has meant an increase in chronic conditions such as diabetes and hypertension. As each condition is treated with a specific drug, a correlating side-effect of each drug comes into play. If a doctor fails to acknowledge all the drugs that a patient is taking, an adverse drug reaction may be misinterpreted as a new medical condition. Another drug is prescribed to treat the new condition, and an adverse drug side-effect occurs that is again mistakenly diagnosed as a new medical condition. Thus the patient is at risk of developing additional adverse effects. [1]
The most frequent medical intervention performed by a doctor is the writing of a prescription. Because chronic illness increases with advancing age, older people are more likely to have conditions that require drug treatment, and they are more likely to suffer the effects of a prescription cascade. [2]
A prescriber can do little to modify age-related physiological changes when trying to minimize the likelihood that an older person will develop an adverse drug reaction. However, when assessing a patient who is already taking drugs, a doctor should always consider the development of any new signs and symptoms as a possible consequence of the patient's drug treatment.
Polypharmacy is the use of numerous medications at the same time (from the root "multiple pharmacies"). As people age, various health conditions may arise and must be treated. Suffering a range of issues from short-term medical conditions to chronic conditions like diabetes or high blood pressure, the older patient may be medicated by a variety of drugs at one time. A review in 2010 found that the average 81-year-old is taking an average of 15 different medications at the same time, ranging from 6 to 28 medications. It also found approximately 8.9 drug-related problems per patient in the study, ranging from 3 to 19 problems. [3] The review found that patients were commonly taking medications that they did not need anymore. More specifically, work from Australia has identified that 16% of older people use medicines that are part of a prescribing cascade. [4]
Insomnia, also known as sleeplessness, is a sleep disorder where people have trouble sleeping. They may have difficulty falling asleep, or staying asleep for as long as desired. Insomnia is typically followed by daytime sleepiness, low energy, irritability, and a depressed mood. It may result in an increased risk of accidents of all kinds as well as problems focusing and learning. Insomnia can be short term, lasting for days or weeks, or long term, lasting more than a month. The concept of the word insomnia has two distinct possibilities: insomnia disorder (ID) or insomnia symptoms, and many abstracts of randomized controlled trials and systematic reviews often underreport on which of these two possibilities the word refers to.
A psychiatric or psychotropic medication is a psychoactive drug taken to exert an effect on the chemical makeup of the brain and nervous system. Thus, these medications are used to treat mental illnesses. These medications are typically made of synthetic chemical compounds and are usually prescribed in psychiatric settings, potentially involuntarily during commitment. Since the mid-20th century, such medications have been leading treatments for a broad range of mental disorders and have decreased the need for long-term hospitalization, thereby lowering the cost of mental health care. The recidivism or rehospitalization of the mentally ill is at a high rate in many countries, and the reasons for the relapses are under research.
Drug withdrawal, drug withdrawal syndrome, or substance withdrawal syndrome is the group of symptoms that occur upon the abrupt discontinuation or decrease in the intake of pharmaceutical or recreational drugs.
A medical error is a preventable adverse effect of care ("iatrogenesis"), whether or not it is evident or harmful to the patient. This might include an inaccurate or incomplete diagnosis or treatment of a disease, injury, syndrome, behavior, infection, or other ailments.
Polypharmacy (polypragmasia) is an umbrella term to describe the simultaneous use of multiple medicines by a patient for their conditions. The term polypharmacy is often defined as regularly taking five or more medicines but there is no standard definition and the term has also been used in the context of when a person is prescribed 2 or more medications at the same time. Polypharmacy may be the consequence of having multiple long-term conditions, also known as multimorbidity and is more common in people who are older. In some cases, an excessive number of medications at the same time is worrisome, especially for people who are older with many chronic health conditions, because this increases the risk of an adverse event in that population. In many cases, polypharmacy cannot be avoided, but 'appropriate polypharmacy' practices are encouraged to decrease the risk of adverse effects. Appropriate polypharmacy is defined as the practice of prescribing for a person who has multiple conditions or complex health needs by ensuring that medications prescribed are optimized and follow 'best evidence' practices.
Alosetron, sold under the brand name Lotronex among others, is a 5-HT3 antagonist used for the management of severe diarrhea-predominant irritable bowel syndrome (IBS) in females only.
An adverse drug reaction (ADR) is a harmful, unintended result caused by taking medication. ADRs may occur following a single dose or prolonged administration of a drug or may result from the combination of two or more drugs. The meaning of this term differs from the term "side effect" because side effects can be beneficial as well as detrimental. The study of ADRs is the concern of the field known as pharmacovigilance. An adverse event (AE) refers to any unexpected and inappropriate occurrence at the time a drug is used, whether or not the event is associated with the administration of the drug. An ADR is a special type of AE in which a causative relationship can be shown. ADRs are only one type of medication-related harm. Another type of medication-related harm type includes not taking prescribed medications, known as non-adherence. Non-adherence to medications can lead to death and other negative outcomes. Adverse drug reactions require the use of a medication.
An adverse effect is an undesired harmful effect resulting from a medication or other intervention, such as surgery. An adverse effect may be termed a "side effect", when judged to be secondary to a main or therapeutic effect. The term complication is similar to adverse effect, but the latter is typically used in pharmacological contexts, or when the negative effect is expected or common. If the negative effect results from an unsuitable or incorrect dosage or procedure, this is called a medical error and not an adverse effect. Adverse effects are sometimes referred to as "iatrogenic" because they are generated by a physician/treatment. Some adverse effects occur only when starting, increasing or discontinuing a treatment. Using a drug or other medical intervention which is contraindicated may increase the risk of adverse effects. Adverse effects may cause complications of a disease or procedure and negatively affect its prognosis. They may also lead to non-compliance with a treatment regimen. Adverse effects of medical treatment resulted in 142,000 deaths in 2013 up from 94,000 deaths in 1990 globally.
Betahistine, sold under the brand name Serc among others, is an anti-vertigo medication. It is commonly prescribed for balance disorders or to alleviate vertigo symptoms. It was first registered in Europe in 1970 for the treatment of Ménière's disease, but current evidence does not support its efficacy in treating it.
Toxic encephalopathy is a neurologic disorder caused by exposure to neurotoxic organic solvents such as toluene, following exposure to heavy metals such as manganese, as a side effect of melarsoprol treatment for African trypanosomiasis, adverse effects to prescription drugs, or exposure to extreme concentrations of any natural toxin such as cyanotoxins found in shellfish or freshwater cyanobacteria crusts. Toxic encephalopathy can occur following acute or chronic exposure to neurotoxicants, which includes all natural toxins. Exposure to toxic substances can lead to a variety of symptoms, characterized by an altered mental status, memory loss, and visual problems. Toxic encephalopathy can be caused by various chemicals, some of which are commonly used in everyday life, or cyanotoxins which are bio-accumulated from harmful algal blooms (HABs) which have settled on the benthic layer of a waterbody. Toxic encephalopathy can permanently damage the brain and currently treatment is mainly just for the symptoms.
Medication discontinuation is the ceasing of a medication treatment for a patient by either the clinician or the patient themself. When initiated by the clinician, it is known as deprescribing. Medication discontinuation is an important medical practice that may be motivated by a number of reasons:
Overmedication describes the excessive use of over-the-counter or prescription medicines for a person. Overmedication can have harmful effects, such as non-adherence or interactions with multiple prescription drugs.
A combination drug or a fixed-dose combination (FDC) is a medicine that includes two or more active ingredients combined in a single dosage form. Terms like "combination drug" or "combination drug product" can be common shorthand for an FDC product, although the latter is more precise if in fact referring to a mass-produced product having a predetermined combination of drugs and respective dosages. And it should also be distinguished from the term "combination product" in medical contexts, which without further specification can refer to products that combine different types of medical products—such as device/drug combinations as opposed to drug/drug combinations. When a combination drug product is a "pill", then it may also be a kind of "polypill" or combopill.
Accidental (CDI), or multiple drug intake (MDI), is a cause of death by drug overdose from poly drug use, often implicated in polysubstance dependence.
Benzodiazepine dependence defines a situation in which one has developed one or more of either tolerance, withdrawal symptoms, drug seeking behaviors, such as continued use despite harmful effects, and maladaptive pattern of substance use, according to the DSM-IV. In the case of benzodiazepine dependence, the continued use seems to be typically associated with the avoidance of unpleasant withdrawal reaction rather than with the pleasurable effects of the drug. Benzodiazepine dependence develops with long-term use, even at low therapeutic doses, often without the described drug seeking behavior and tolerance.
Iatrogenesis is the causation of a disease, a harmful complication, or other ill effect by any medical activity, including diagnosis, intervention, error, or negligence. First used in this sense in 1924, the term was introduced to sociology in 1976 by Ivan Illich, alleging that industrialized societies impair quality of life by overmedicalizing life. Iatrogenesis may thus include mental suffering via medical beliefs or a practitioner's statements. Some iatrogenic events are obvious, like amputation of the wrong limb, whereas others, like drug interactions, can evade recognition. In a 2013 estimate, about 20 million negative effects from treatment had occurred globally. In 2013, an estimated 142,000 persons died from adverse effects of medical treatment, up from an estimated 94,000 in 1990.
Deprescribing is a process of tapering or stopping medications to achieve improved health outcomes by reducing exposure to medications that are potentially either harmful or no longer required. Deprescribing is important to consider with changing health and care goals over time, as well as polypharmacy and adverse effects. Deprescribing can improve adherence, cost, and health outcomes but may have adverse drug withdrawal effects. More specifically, deprescribing is the planned and supervised process of intentionally stopping a medication or reducing its dose to improve the person's health or reduce the risk of adverse side effects. Deprescribing is usually done because the drug may be causing harm, may no longer be helping the patient, or may be inappropriate for the individual patient's current situation. Deprescribing can help correct polypharmacy and prescription cascade.
Prescription drug addiction is the chronic, repeated use of a prescription drug in ways other than prescribed for, including using someone else’s prescription. A prescription drug is a pharmaceutical drug that may not be dispensed without a legal medical prescription. Drugs in this category are supervised due to their potential for misuse and substance use disorder. The classes of medications most commonly abused are opioids, central nervous system (CNS) depressants and central nervous stimulants. In particular, prescription opioid is most commonly abused in the form of prescription analgesics.
Antipsychotic abuse refers to the non-medical or inappropriate use of antipsychotic medications for purposes other than their intended therapeutic use. Antipsychotics, also known as neuroleptics, are a class of medications primarily used in treating psychiatric disorders such as schizophrenia, bipolar disorder, and certain types of depression. The misuse and abuse (MUA) of pharmaceuticals are typically linked to medications that elicit euphoria or other desirable effects, such as relaxation or increased alertness. Consequently, antipsychotics are not commonly categorized as significant substances prone to abuse. However, antipsychotics abuse may be attributed to its calming and sedative effects, and they have been exploited to either enhance the effects of illicit substances like cocaine and marijuana or counteract their adverse consequences. Due to the potential of physical, social, and psychological consequences in patients using antipsychotics, the prevention and protection of these patient populations from the MUA of drugs has been implemented via various legislations worldwide which differ depending on the local jurisdiction.
Prescription drugoveruse or non-medical prescription drug use is the use of prescription medications that is more than the prescribed amount, regardless of whether the original medical reason to take the drug is legitimate. A prescription drug is a drug substance prescribed by a doctor and intended to for individual use only.