The body s reacts to anything suspicious by developing an allergic reaction. Some of the common substances inducing this reaction include certain food substances, pollen, insect bites and certain metals. This body recognises these suspicious substances as antigens and produces what is known as antibodies. These produce various allergic reactions in the body ranging from something as minor as a skin rash to something drastically fatal as respiratory distress and even death.

Features:

Angioedema is one of the most severe forms of allergic reactions.
Translated literally as swelling of the blood vessels, angioedema causes swelling of the blood vessels in the underlying layers and this can lead to the formation of giant hives.
The hives or rashes are extremely itchy, reddish, and can vary in shape (oval or circular). The hives also are warm and painful when touched.
Angioedema usually affects the skin but can have more severe effects like blocking the airway and leading to respiratory distress
Causes: Angioedema is usually caused by one of the following:

Insect bites or stings
People with allergies to foods like peanuts, eggs, milk, shellfish, chocolates, tree nuts, etc.
Pollen, animal dander, latex, poison ivy, and other common allergens
Medicines like penicillin, aspirin, ibuprofen, and some anti-hypertensives
Autoimmune skin disorders like lupus
Reaction to incompatible blood transfusions
Weather conditions like extremes of cold, heat, or pressure
Infections like hepatitis, cytomegalovirus infections, Epstein-Barr infections, etc.
Conditions like leukaemia and thyroid disorders
Extreme emotional stress
Genetic angioedema, inherited from parents by children, which can last forever
Risk factors: Though hives usually develop without any warning signs, the following are some risk factors for developing angioedema.

Previous history of allergies
Predisposition to develop allergic reactions (overactive immune system)
Genetic history of allergies, especially of angioedema
Diagnosis:

In first-time patients, a detailed history with deep dive into similar instances in the past will be done
A physical exam to check for missed hives (like the back) is then done
Allergy testing may also be required to test if a person has a high predisposition to allergies
Blood testing to check for eosinophils, which is usually high in patients with allergies, is done.
Allergy testing to identify the trigger agent may be done if trigger is not known. This will help in preventing further attacks.
If genetic angioedema is suspected, C1 esterase inhibitor test and complement particles are also checked.
Treatment:
Non-medical treatment including loose clothing, cool compresses, and copiously moisturizing to reduce dryness and itching. This is usually sufficient in majority of the cases.
Medical: Antihistamines like cetirizine and loratadine are the next line of treatment. Very severe cases may require steroids like prednisone.


Angioedema - 11 Reasons Why It Can Happen!

Hereditary Angioedema is a rare skin related disorder and as the name suggests it is also a genetically inherited condition. This condition mainly afflicts the throat, abdomen and the limbs of the patient, with a certain kind of swelling. This swelling can become fatal if not treated on time. Here is everything you need to know about the condition and its treatment.

Causes: A rare genetic mutation of the SERPING1 gene can cause this condition. Usually, this gene is known to produce C1 esterase inhibitor, which is a kind of blood protein. This blood protein is an important element of one s immune system and is usually involved in the biochemical reactions that control the body s response to inflammation causing elements. This is done when the blood protein produces a hormone known as Bradykinin. If this blood protein does not function in a normal manner, then there is excessive production of this hormone, which leads to swelling and inflammation.

Type One: There are various types of Hereditary Angioedema that can affect various parts of the body. Type one is one of the most common kinds and can be found on the face, hands, abdomen, throat, as well as feet and genitals of the patient. The severity and frequency of attacks cannot really be predicted and the patient may suffer from attacks throughout his or her life. The best way to treat this type of Hereditary Angioedema is with the help of antihistamine drugs and prednisone which can fight allergic attacks.

Type Two: This kind of Hereditary Angioedema has the same symptoms as type one and is caused by a malfunction of the C1 inhibitor, rather than the Bradykinin hormone as one can see in type one. This condition can also be treated with anti-allergy drugs.

Type Three: This is very rare kind of Hereditary Angioedema. In fact, medical science is yet to find a conclusive body of knowledge that can point to the exact causes and symptoms of this condition. Coagulation is one of the main causes recognised so far. This condition is much more common in women than it is in men, and it usually shows up as facial swelling.

Timely Treatment: While there is no cure for this condition, one can prevent a flare up of the symptoms by taking C1 inhibitors and Bradykinin receptors as well as enzyme inhibitors. It is important to get early treatment for the symptoms and to have constant access to a hospital and its emergency unit. One should also keep track of attacks and symptoms and get regular check-ups done by a doctor to detect the earliest signs of the same to avoid fatalities.

What is Hereditary Angioedema and How Can it be Treated?

Dialysis is a very important and life-saving procedure. It is performed to replace kidney function in case of renal failure. Wastes and extra fluids in the blood are filtered out during this process. To be able to perform Dialysis, the connection between the patient s bloodstream and the equipment for performing Dialysis (dialyzer) outside the body is established. This connection is created through Dialysis Access Surgery. It is a type of Vascular Surgery which forms the vascular opening for access during Dialysis. Thus, Dialysis Access Surgery is the lifeline for the survival of the patient.

Types of Vascular Access for Dialysis- 
There are three types of Vascular Access for Dialysis: Arteriovenous (AV) Fistula, Arteriovenous (AV) Graft, and Venous Catheter.

  Arteriovenous (AV) fistula is a surgical connection of an artery to a vein. An AV fistula is usually placed in the upper arm or in the forearm. It causes extra blood to flow into vein making it grow large. A larger vein hence provides easy access to blood vessels. An AV fistula is preferred over other methods as it lasts longer than other methods of access and provides a good flow of blood. Moreover, it is less prone to infection and blood clots than other methods. Before an AV Surgery, a Vessel Mapping Test is sometimes performed for assessing the blood vessels most suitable for Dialysis. An AV fistula is performed under local anaesthesia and requires two to three months for maturation before hemodialysis. If it fails to mature, the procedure is repeated.

  Arteriovenous (AV) graft is performed when AV fistula fails to mature. It is hence the second most preferred choice for long-lasting access to vascular tissues for Dialysis. An AV graft is a looped plastic tube which establishes a connection between an artery and a vein. Like AV fistula, AV graft is also performed under local anaesthesia. It is slightly more difficult to maintain than an AV fistula.

  A venous catheter is used for short- term hemodialysis. It is a tube which is inserted into chest, neck, leg, or near groin for vascular access. After exiting the body, the tube splits into two halves. In the case where a renal disease has made quick progression leaving little or no time for the AV fistula or AV graft to mature, a venous catheter is used to establish the required vascular connection. This procedure is also performed under local anaesthesia. It is a tool for emergencies but is not suited for long- term use. It can cause narrow vein due to an infection,
scarring, or blood clot. If long- term venous catheter is used, it is tunnelled under the skin which has fewer problems associated with it and is more comfortable. 

How to Care for a Vascular Access?
  Get checked for infections and other problems before each hemodialysis session;
  Use the operated site for access only for the intended use;
  Always keep the access clean;
  Prevent cutting or bumping the access;
  Check for thrill/ vibration in the access and inform the doctor if any;
  Do not put pressure on the access site;
  Do not put blood pressure cuff around the access arm;
  Do not wear jewellery or tight-fitting garments over the site;
  Do not lift a weight.

Take Away-
Vascular Surgery for Dialysis is performed to provide vascular access for the procedure. AV fistula is the most preferred type followed by an AV graft. A venous catheter is recommended to be used only in case of an emergency when there is not much time left for the other two options to mature.

Vascular Surgery - Can It Help For Dialysis?

In our bodies, the vascular system is composed of vessels. This system is comprised of a complex network of veins and arteries. The arteries transport oxygenated blood away from the heart and spread it throughout our bodies and veins brings the deoxygenated blood (oxygen-poor) back to the heart for purification. Whenever this complicated process gets disturbed, pain, dysfunction of the system, and other complications may occur.

Most common complications among all are:
1. Abdominal Aortic Aneurysm: This condition is when there is a  bulge  formed in the weak area of the largest artery in the abdomen and keeps on increasing with each pressure flow of blood from that artery. This condition weakens the artery further and massive internal bleeding may occur.

2. Carotid Artery Disease - Stroke: This condition arises when the main blood vessels flowing blood to the brain develops a plague caused due to hardening of the arteries (atherosclerosis). The continuous increase of plague can cause a stroke.

3. Peripheral Arterial Disease: This condition occurs when the flow of oxygen-rich blood is insufficient to the lower limbs of the body due to hardening of the arteries in that area. This can cause difficulty in walking, foot ulcers, infections and can even lead to amputation.

The complication of these types are corrected by the vascular surgeon with the process is commonly known as vascular surgery. However, this condition is sometimes medically managed by an innovative, less invasive procedure called Endovascular surgery. 

Vascular Surgery-
Vascular surgery is generally the traditional surgery that corrects the diseases outside of the heart and the brain. This procedure is more invasive as it involves incisions that are surgical in nature. Vascular surgery comprises of the surgery of the aorta, carotid arteries, and other small diametric arteries. This surgery also involves surgery of veins for treating various conditions such as varicose veins and May-Thurner syndrome.

Endovascular Surgery:
However, this type of surgery is an innovative way to treat medical conditions related to the vascular system. For instance, during the procedure of treating the Abdominal Aortic Aneurysm, it involves making a small cut near the hip area and inserting the endovascular graft through the arteries and is positioned inside the aorta, in a catheter, which is a flexible, long, and narrow tube. The endovascular graft is a tube device made up of special fiber and is framed within stainless steel self-expanding stents. The grafts expand and seal off the aneurysm. This stops the internal bleeding the system and the graft remain in the aorta permanently.

This method has a short recovery time, smaller incisions, less discomfort, less stress on the heart and has fewer risks. This surgery is appropriate for the patient who is at high
risk of complications. 

Take Away-
Diseases related to artery and veins are now being treated with various methods such as angiography, stenting, sclerotherapy in various countries. These days vascular surgeons have become proficient with the endovascular surgical methods. Endovascular surgery is durable and less painful and stressful when viewed with the context of vascular surgery. However, the cost of staying longer at the hospitals is somewhat got balanced by the high cost of imaging equipment and other high financial expenses in the endovascular surgery.

Endovascular VS Vascular Surgery - Know The Difference!

Peripheral vascular disease (PVD) is a circulation issue that affects the veins and blood vessels outside of the brain and heart. PVD commonly strikes the veins that supply blood to the arms, legs, and organs situated beneath the stomach. These are the veins that are located away from the heart. They are known as peripheral vessels.

In PVD, the width of the veins get limited. Narrowing is normally created by arteriosclerosis. Arteriosclerosis is a condition where plaque develops inside a vessel. It is additionally called 'solidifying of the arteries'. Plaque acts towards reducing the amount of blood and oxygen that is supplied to the arms and legs. As the plaque development advances, clumps may develop, which may further affect the vessel.

There are two main types of PVDs:

    Functional PVD: This doesn't include physical issues in the veins. It causes accidental side effects. Typically,these fits happen suddenly.
    Organic PVD: This includes changes in the vein structure. This sort of PVD causes irritation, tissue harm, and blockages.

The most well-known reasons for functional PVDs are as follows:

    Emotional stress
    Smoking
    Cold temperatures
    Operating Vibrating machinery

The common causes of such natural PVDs are given below:

    Smoking
    High circulatory strain
    Diabetes
    High cholesterol

The symptoms include the following:

    Cramps
    Achiness
    Fatigue
    Burning

Diagnosis:

PVD can be diagnosed using interventional radiology (IR).

IRis a sub-claim of radiology that gives an image-guided diagnosis, and if required, includes treatment of the organs as well.It has developed as a first-line treatment in the administration of PVD.

Advantages:

IR medications are for the most part less demanding for patients than surgery, since they include no surgical cut.They are less painful and have shorter stays at the hospital. By and large, the patients are discharged on the same day the procedure is done. This mainly includes angioplasty and stenting. The procedure is as follows:

    Utilising imaging for direction, the interventional radiologist puts a catheter through the femoral artery in the crotch to the blocked vein in the legs.
    At that point, the interventional radiologist expands a balloon to open the vein that is blocked.
    Sometimes it is opened with a tiny metallic cylinder called astent.
    This is a treatment that does not require surgery; only a scratch in the skin the extent of a pencil tip.

Alternative measure:

Angioplasty and stenting have totally replaced invasive surgical methods. Early trials have proven IR to be as successful as surgery for some blood vessel and artery impairments. Earlier, extensive clinical experience demonstrated that stenting and angioplasty are favoured as first-line treatments for more procedures all through the body .

Doctors as well as patients who have been through the same, believe that IR is much better for PVD than invasive surgery, since it reduces the risk of infection.

Diagnosing Peripheral Vascular Diseases With Interventional Radiology

Uncontrollable division of cells present in the tissue leads to the formation of a lump or mass of tissue. This mass of tissue is known as a tumor and when this condition is diagnosed in the bones of a human body, it is known as bone tumor. Most bone tumors are non-cancerous (benign) and cannot grow. However, it is still possible that the bones could be weakened and the condition could result in fractures and other such problems. The tumor replaces the normal and healthy tissue.

It is observed that cases of malignant bone tumors are much less as compared to benign tumors. Some examples of benign bone tumours include:
1. Giant Cell tumor: In this condition, the tumor affects the legs
2. Osteochondroma: This form is most common among teenagers
3. Osteoblastoma: A tumor which develops in young adults and affects the spine
4. Osteoid osteoma: A tumor that affects long bones
5. Enchondroma: Usually found in hand and feet.

As stated earlier, metastatic cancer is a form of cancer that spreads to the bone from other spots in the body. Cancers from other parts that commonly spread to the bones include breast cancer, prostate cancer and lung cancer.

It is common for bone tumors to bear no symptoms and they can only be diagnosed using an x-ray. However, a typical symptom of bone tumor is pain which:
1. Starts in the region of the bone tumor
2. Often feels achy
3. Worsens with activity

Other symptoms that might be related to bone tumors are:
1. Abnormal swelling around the bone
2. Fever
3. Limping, in rare cases

Treatment
1. Benign bone tumors can be treated by just using medications. However, the tumours might relapse even after treatment.
2. Treatment of malignant tumor might require a number of specialists. The stage of cancer plays a vital role in the treatment.

Common treatments for bone tumor are:
1. Amputation: It is the surgical removal of all or a part of the limb and is conducted only if the tumor is large.
2. Radiation therapy: High intensity X-rays are used to kill cancer cells and treat the tumors.
3. Chemotherapy: Tumor cells which have infiltrated the bloodstream are eliminated using cancer drugs.

Abnormal Swelling - Can it be a Sign of Bone Tumor

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