In cases of axial ankylosing spondylitis that have not responded to two different NSAIDs and meet the criteria for active disease on two separate occasions 12 weeks apart, the use of anti-TNF alpha inhibitors is recommended. Additionally, physiotherapy should be incorporated throughout the treatment process.

Investigating and Managing Ankylosing Spondylitis

Ankylosing spondylitis is a type of spondyloarthropathy that is associated with HLA-B27. It is more commonly seen in males aged 20-30 years old. Inflammatory markers such as ESR and CRP are usually elevated, but normal levels do not necessarily rule out ankylosing spondylitis. HLA-B27 is not a reliable diagnostic tool as it can also be positive in normal individuals. The most effective way to diagnose ankylosing spondylitis is through a plain x-ray of the sacroiliac joints. However, if the x-ray is negative but suspicion for AS remains high, an MRI can be obtained to confirm the diagnosis.

Management of ankylosing spondylitis involves regular exercise, such as swimming, and the use of NSAIDs as the first-line treatment. Physiotherapy can also be helpful. Disease-modifying drugs used for rheumatoid arthritis, such as sulphasalazine, are only useful if there is peripheral joint involvement. Anti-TNF therapy, such as etanercept and adalimumab, should be given to patients with persistently high disease activity despite conventional treatments, according to the 2010 EULAR guidelines. Ongoing research is being conducted to determine whether anti-TNF therapies should be used earlier in the course of the disease. Spirometry may show a restrictive defect due to a combination of pulmonary fibrosis, kyphosis, and ankylosis of the costovertebral joints.

Haemochromatosis as a Cause of Hypogonadism

The patient’s medical history suggests that haemochromatosis may be the underlying cause of their hypogonadism. While their moderate alcohol consumption of 10 units per week may contribute to liver dysfunction, other potential explanations should be explored. Additionally, the patient’s history of type 2 diabetes and seronegative arthropathy are consistent with iron storage diseases. Haemochromatosis can lead to reduced insulin production, resulting in a presentation similar to type 2 diabetes. To confirm the diagnosis, serum ferritin and transferrin saturation levels should be evaluated, as elevated levels of both are highly indicative of haemochromatosis.

Understanding Shaken Baby Syndrome

Shaken baby syndrome is a condition that involves a combination of retinal haemorrhages, subdural haematoma, and encephalopathy. It occurs when a child between the ages of 0-5 years old is intentionally shaken. However, there is controversy among physicians regarding the mechanism of injury, making it difficult for courts to convict suspects of causing shaken baby syndrome to a child. This condition has made headlines due to the ongoing debate among medical professionals.

Shaken baby syndrome is a serious condition that can cause long-term damage to a child’s health. It is important to understand the signs and symptoms of this condition to ensure that children are protected from harm. While the controversy surrounding the diagnosis of shaken baby syndrome continues, it is crucial to prioritize the safety and well-being of children. By raising awareness and educating the public about this condition, we can work towards preventing it from occurring in the future.

Chronic urinary retention is considered high pressure if it leads to impaired renal function or hydronephrosis. A painless distended bladder containing over 1 L of urine is a common symptom of chronic urinary retention, usually caused by bladder outflow obstruction. In this case, the patient’s elevated creatinine levels (290) and bilateral hydronephrosis visible on US KUB indicate high pressure chronic retention. Low pressure chronic urinary retention, on the other hand, does not cause hydronephrosis or renal impairment. Acute urinary retention typically presents with supra-pubic tenderness and a palpable bladder, but does not usually result in a painless distended bladder. Catheterisation typically drains less than 1 L of urine. Given the patient’s painless distended bladder and 1.2L urine volume, acute urinary retention is unlikely.

Understanding Chronic Urinary Retention

Chronic urinary retention is a condition that develops gradually and is usually painless. It can be classified into two types: high pressure retention and low pressure retention. High pressure retention is often caused by bladder outflow obstruction and can lead to impaired renal function and bilateral hydronephrosis. On the other hand, low pressure retention does not affect renal function and does not cause hydronephrosis.

When chronic urinary retention is diagnosed, catheterisation may be necessary to relieve the pressure in the bladder. However, this can lead to decompression haematuria, which is a common side effect. This occurs due to the rapid decrease in pressure in the bladder and usually does not require further treatment.

Lidocaine blocks sodium channels to function as a local anaesthetic and anti-arrhythmic drug. When administered intramuscularly, it prevents the presynaptic neuron from depolarizing and sending an action potential. However, it may cause side effects such as nausea, dizziness, tinnitus, and tremor. Other drugs work through different mechanisms, such as digoxin inhibiting the sodium/potassium pump, sildenafil inhibiting phosphodiesterase, verapamil blocking calcium channels, and amiodarone blocking potassium channels as an antiarrhythmic drug.

Local anaesthetic agents include lidocaine, cocaine, bupivacaine, and prilocaine. Lidocaine is an amide that is metabolized in the liver, protein-bound, and renally excreted. Toxicity can occur with IV or excess administration, and increased risk is present with liver dysfunction or low protein states. Cocaine is rarely used in mainstream surgical practice and is cardiotoxic. Bupivacaine has a longer duration of action than lignocaine and is cardiotoxic, while levobupivacaine is less cardiotoxic. Prilocaine is less cardiotoxic and is the agent of choice for intravenous regional anesthesia. Adrenaline can be added to local anesthetic drugs to prolong their duration of action and permit higher doses, but it is contraindicated in patients taking MAOI’s or tricyclic antidepressants.

Psoriatic arthropathy is a type of inflammatory arthritis that is associated with psoriasis. It is classified as one of the seronegative spondyloarthropathies and is known to have a poor correlation with cutaneous psoriasis. In fact, it often precedes the development of skin lesions. This condition affects both males and females equally, with around 10-20% of patients with skin lesions developing an arthropathy.

The presentation of psoriatic arthropathy can vary, with different patterns of joint involvement. The most common type is symmetric polyarthritis, which is very similar to rheumatoid arthritis and affects around 30-40% of cases. Asymmetrical oligoarthritis is another type, which typically affects the hands and feet and accounts for 20-30% of cases. Sacroiliitis, DIP joint disease, and arthritis mutilans (severe deformity of fingers/hand) are other patterns of joint involvement. Other signs of psoriatic arthropathy include psoriatic skin lesions, periarticular disease, enthesitis, tenosynovitis, dactylitis, and nail changes.

To diagnose psoriatic arthropathy, X-rays are often used. These can reveal erosive changes and new bone formation, as well as periostitis and a pencil-in-cup appearance. Management of this condition should be done by a rheumatologist, and treatment is similar to that of rheumatoid arthritis. However, there are some differences, such as the use of monoclonal antibodies like ustekinumab and secukinumab. Mild peripheral arthritis or mild axial disease may be treated with NSAIDs alone, rather than all patients being on disease-modifying therapy as with RA. Overall, psoriatic arthropathy has a better prognosis than RA.

Pneumonia is a common complication of measles and can be fatal, especially in children. The measles virus can damage the lower respiratory tract epithelium, which weakens the local immunity in the lungs and leads to pneumonia. Other complications of measles include otitis media, encephalitis, subacute sclerosing panencephalitis, keratoconjunctivitis, corneal ulceration, diarrhea, increased risk of appendicitis, and myocarditis. Treatment for measles involves rest, fluids, and pain relief. It is important to inform the local Health Protection Team (HPT) and avoid school or work for at least four days after the rash appears. Mumps can cause complications such as orchitis, oophoritis, pancreatitis, and viral meningitis. Symptoms of mumps include fever, headache, swelling of the parotid glands, and general malaise. Kawasaki disease, on the other hand, can lead to coronary artery aneurysm and presents with symptoms such as high fever, rash, conjunctival injection, red and cracked hands, feet, and lips, and swollen lymph glands. It is important to note that otitis media, not otitis externa, is a complication of measles.

Measles: A Highly Infectious Viral Disease

Measles is a viral disease caused by an RNA paramyxovirus. It is one of the most infectious known viruses and is spread through aerosol transmission. The disease has an incubation period of 10-14 days and is infective from the prodromal phase until four days after the rash starts. Measles is now rare in developed countries due to immunization programs, but outbreaks can occur when vaccination rates drop, such as during the MMR controversy of the early 2000s.

The disease is characterized by a prodromal phase, which includes irritability, conjunctivitis, fever, and Koplik spots. The latter typically develop before the rash and are white spots on the buccal mucosa. The rash starts behind the ears and then spreads to the whole body, becoming a discrete maculopapular rash that may become blotchy and confluent. Desquamation may occur after a week, typically sparing the palms and soles. Diarrhea occurs in around 10% of patients.

Measles is mainly managed through supportive care, and admission may be considered in immunosuppressed or pregnant patients. The disease is notifiable, and public health should be informed. Complications of measles include otitis media, pneumonia (the most common cause of death), encephalitis (typically occurring 1-2 weeks following the onset of the illness), subacute sclerosing panencephalitis (very rare, may present 5-10 years following the illness), febrile convulsions, keratoconjunctivitis, corneal ulceration, diarrhea, increased incidence of appendicitis, and myocarditis.

If an unimmunized child comes into contact with measles, MMR should be offered within 72 hours. Vaccine-induced measles antibody develops more rapidly than that following natural infection.

During intercurrent illness such as diarrhoea and vomiting, it is important to suspend the use of metformin as it increases the risk of lactic acidosis. Increasing the dose of ramipril is not recommended as it may increase the risk of electrolyte disturbance while the patient is unwell. Similarly, there is no indication to double the dose of lansoprazole. Suspending ramipril is also not necessary as there is no evidence of acute electrolyte disturbance. However, reducing the dose of paracetamol to 500 mg may be considered if the patient has a low body weight.

The following table provides a summary of the typical side-effects associated with drugs used to treat diabetes mellitus. Metformin is known to cause gastrointestinal side-effects and lactic acidosis. Sulfonylureas can lead to hypoglycaemic episodes, increased appetite and weight gain, as well as the syndrome of inappropriate ADH secretion and liver dysfunction (cholestatic). Glitazones are associated with weight gain, fluid retention, liver dysfunction, and fractures. Finally, gliptins have been linked to pancreatitis.

The presence of fever, headache, and a focal neurological deficit, such as arm weakness, suggests a brain abscess as the correct diagnosis. Additionally, the patient’s history of seizures supports this diagnosis. However, diagnosing a brain abscess can be challenging, as the classic triad of symptoms is only present in a minority of cases. Epilepsy is unlikely due to the presence of fever and arm weakness, and the absence of a seizure history. Hypoglycemia is not the correct answer as the patient’s blood glucose level is within the normal range. Meningitis is a key differential diagnosis, but it is less likely to cause focal neurological abnormalities and tends to present with reduced consciousness or confusion in addition to fever and headache.

Understanding Brain Abscesses

Brain abscesses can occur due to various reasons such as sepsis from middle ear or sinuses, head injuries, and endocarditis. The symptoms of brain abscesses depend on the location of the abscess, with those in critical areas presenting earlier. Brain abscesses can cause a considerable mass effect in the brain, leading to raised intracranial pressure. Symptoms of brain abscesses include dull and persistent headaches, fever, focal neurology, nausea, papilloedema, and seizures.

To diagnose brain abscesses, doctors may perform imaging with CT scanning. Treatment for brain abscesses involves surgery, where a craniotomy is performed to remove the abscess cavity. However, the abscess may reform because the head is closed following abscess drainage. Intravenous antibiotics such as 3rd-generation cephalosporin and metronidazole are also administered. Additionally, intracranial pressure management with dexamethasone may be necessary.

Overall, brain abscesses are a serious condition that requires prompt medical attention. Understanding the symptoms and treatment options can help individuals seek medical help early and improve their chances of recovery.

When dealing with patients who have been diagnosed with anal fistula, the priority is to determine the course of the fistula. This information is crucial in deciding whether surgery is necessary and what type of surgery would be most appropriate. Surgical exploration may be necessary in emergency situations, but it is generally not advisable to perform surgery without first understanding the structure and course of the fistula. The most effective way to characterise the fistula course is through an MRI, as CT scans and x-rays are not as effective in visualising the soft tissue of the fistula. Blood tests are not useful in providing information about the structure and course of the fistula. Currently, the patient is stable and in good health.

Fistulas are abnormal connections between two epithelial surfaces, with the majority arising from diverticular disease and Crohn’s in the abdominal cavity. They can be enterocutaneous, enteroenteric or enterocolic, enterovaginal, or enterovesicular. Conservative measures may be the best option for management, but high output fistulas may require octreotide and TPN for nutritional support. Surgeons should avoid probing perianal fistulae with acute inflammation and use setons for those secondary to Crohn’s disease. It is important to delineate the fistula anatomy using barium and CT studies for intraabdominal sources and recalling Goodsall’s rule for perianal fistulae.