wo baths a day keep bacteria at bay
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Come summer and people start suffering from pimples, prickly heat, carbuncles and heat boils. No matter what the advertisements say, no cream, talc or lotion can keep you “cool” and prevent heat-induced skin infections. For that, you need to maintain basic hygiene. Bathe twice a day, preferably with medicated soap. Add 1 teaspoon of sodium bicarbonate to each bucket of water. It is best to shave off facial hair and the armpit area, which can easily develop an infection because of the sweat build up there. It will not clear until all the hair has been removed. Any medication applied will otherwise stick to the hair and not permeate to the pores. The area should also be washed with soap three times a day.
Do not apply any powder. Contrary to what the advertisements say, prickly heat powder or talc actually encourages skin infections. Powder combines with sweat to block the pores of the skin. The sebum and sweat builds up behind the blocked pore, providing a nutritious medium for bacteria to grow.
If a pimple or furuncle appears, do not pick or press it. Clean the area with medicated soap and apply antibacterial ointment (such as Neosporin or bacitracin) with a cotton bud. Unfortunately, most people are unable to keep their hands off these lesions. They pick and press to remove them or even try to shave the rash off. Medical personnel and beauty parlours also offer cosmetic and “safe” removal of facial blemishes, pimples and acne. There is no such thing.
Bacteria belonging to the Staphylococcus family live on the surface of the skin. Usually, they do not cause any harm. However, if a person’s immunity decreases because of debilitating illness or there is an injury, these bacteria can enter the deeper layers of the skin. The bacteria that do this are not necessarily more virulent mutants of theStaphylococcus family. They are opportunistic, taking advantage of the temporary weakness and breach in the body’s defences.
Medicated soaps such as Neko damage the outer cell wall of the Staphylococcusbacteria, killing them. So it is a good idea to use such a soap regularly. Apply it on the body with a loofah or towel.
The skin of the face is abundantly supplied with blood vessels. These pass through connective tissue and then directly join the veins in the brain. So any time there is a cut on the face, it is relatively easy for bacteria to enter the brain and cause dangerous infections. This is particularly true of a triangular area of the face, which can be demarcated by drawing an imaginary line between the tip of the nose and the angles of the mouth. Even trivial infections in this area can be fatal, earning it the name “dangerous” area.
Unfortunately this area is also very injury prone. It can be easily nicked while shaving. The upper lip is hairy (in both sexes) and so retains sweat and dirt. The pores become easily blocked. Young people are often in the habit of actively picking at facial lesions. Even in the absence of active physical interference, infection can set in.
Initially there may be just a cold feeling. This will soon be followed by high fever. The area may become red, swollen, hard and painful to touch. The eye on the affected side can become puffed up and half shut. These are dangerous signs and a physician needs to be contacted immediately.
Pus accumulating in other parts of the body needs to be drained. In this dangerous area, it needs to be left alone. This is because any interference with the lesion causes the pus to enter the deeper tissues and spread rapidly because of the abundant blood supply. The high content of connective tissue in that area facilitates this spread by holding the veins open. Instead of surgical interference, high doses of antibiotics should be given. Clean the area gently, without pressing down on it.
Self-medication with one or two doses of antibiotics for insignificant skin infections makes the friendly skin bacteria resistant and virulent. Infections will recur frequently, spread to other areas of the body and become non-responsive to treatment. So only take antibiotics under medical supervision and always complete the dose the doctor has prescribed.
Dr Gita Mathai is a paediatrician with a family practice at Vellore. Questions on health issues may be emailed to her at yourhealthgm@yahoo.co.in
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Monday, April 29, 2013
summer skin lesions
Monday, April 15, 2013
humble tomato
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Monday, April 8, 2013
palpitations
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Saturday, March 30, 2013
to operate or not
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Wednesday, March 20, 2013
cold sores
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Saturday, March 9, 2013
breathing
A breath of fresh air
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Life starts with a baby’s first breath and ends with the last one. We breathe without being conscious of it. It is an autonomous reflex that is so deeply embedded in the brain that it is not possible to commit suicide by holding your breath.
Shortness of breath occurs when we become conscious of our breathing and it is no longer automatic. We feel it is insufficient, or that the “air” is not enough. It can occur for many reasons. It may be just a subjective perception; anxiety may make you take short, sharp, ineffective breaths or attention-seeking individuals may have conscious intermittent sighing respiration, which induces anxiety in care givers and bystanders.
The respiratory rate can be measured by counting the number of breaths for a full minute. It is 30-60 per minute in babies. It then gradually falls to 12-20 per minute in adults. The rate increases with illness, in anxiety, fear or with exercise. It decreases (8-18/min) and becomes imperceptible and shallow while sleeping.
During breathing, air enters through the nose and reaches the lungs through a system of pipes and airways. The lungs have multiple alveoli or sacs where oxygen from the air enters the body and carbon dioxide (a waste product) leaves the body. The lungs expand when air is breathed in. This occurs because the rib cage moves out, the diaphragm (a muscle that separates the chest from the abdomen) moves down and the stomach moves out.
With age, the rib cage becomes fixed and the muscles that move it weak. Breathing becomes laboured, inefficient and difficult.
Obesity causes mechanical problems. The rib cage and stomach do not move efficiently so the lung capacity is reduced. Fat deposits around the neck can cause obstruction and snoring while sleeping.
Difficulty in breathing may be due to problems in the nose itself. It may be blocked with an allergy or a viral infection, there may be obstructive polyps, the septum may be deviated to one side or the sinuses that drain through the nose may be infected.
Allergies can be due to dust, paint, cement, cockroaches, house mites, incense sticks, aerosol sprays or vapourising mosquito repellents. Avoiding the allergen may cure the nose block. If this is not possible, tackle it with nasal drops and sprays. Medicated sprays tend to be habit forming and cause rebound congestion. This means they become less effective and have to be used more frequently. It is better to use saline drops or a locally acting steroid like fluticasone. Steam inhalations also help. Antihistamines dry nasal secretions. A deviated septum may require surgical correction.
Enlarged tonsils and adenoids can cause mechanical block and snoring in children.
Hyperactive airways can constrict and collapse when there is infection, an allergy or exposure to more or less the same allergens that cause nose blocks. This results in a wheezing sound. Breathing becomes laboured and a fear of “asthma” sets in. This constriction can be effectively tackled by direct delivery of medication to the lungs. Nebulizers, spacers, inhalers and rotahalors do this efficiently and effectively. Since these deliver the medication directly to the target organ (lung), the side effects are minimal. Before these systems were developed, only tablets and syrups were available. They had to get absorbed from the intestines and then be carried by the blood to the lungs. This took a long time and the medication also produced side effects.
Heart, liver and kidney disease or failure causes fluid build up in the body. The feet and abdomen become swollen and fluid accumulates in the lungs, making breathing difficult. This fluid has to be medically removed for breathlessness to improve.
Even though breathing is a reflex, we need to make sure the apparatus functions efficiently. Aerobic exercises such as running, jogging, swimming, cycling and brisk walking increase the oxygen requirements of the body. Breathing becomes rapid and all the muscles need to function to their maximum capacity. Exercising for an hour most days a week keeps our breathing apparatus working in tip-top condition.
There are breathing exercises in yoga, Tai Chi and in the martial arts. If performed regularly, they increase lung capacity. These are worth practising every day so that age-induced changes do not reduce respiratory capacity. These exercises complement aerobic activity.
Dr Gita Mathai is a paediatrician with a family practice at Vellore. Questions on health issues may be emailed to her at yourhealthgm@yahoo.co.in
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Friday, March 1, 2013
cancer the crab that kills
The crab that kills
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Cancer is not a new disease. The word cancer is derived from karkinos, Greek for crab. Worldwide, 13 per cent of deaths can be directly or indirectly attributed to cancer. The apparent increase in numbers is due to the population explosion, increased longevity, improved diagnoses and better communication. Everyone knows someone who has cancer.
In developed countries, cancer is picked up early because of awareness and subsidised screening programmes. Treatment is effective and a large number of people survive. This is not the case in our country. Here, cancer is diagnosed late because of fear, ignorance or lack of facilities. In the coming decade, 70 per cent of cancer deaths worldwide will occur in developing countries.
There are more than 100 types of cancer with different symptoms. The patient may notice the presence of a swelling. The abdomen may get swollen. Lymph nodes may enlarge and appear in various parts of the body. The diagnosis is difficult when the symptoms are vague, like chronic fatigue, weight loss, hoarseness of the voice, difficulty in swallowing or breathing or non-specific muscle and joint pains.
All cancers are due to mutations in the genes and damage in the chromosomal structure of the body. These alterations in cell structure allow them to grow rapidly with no regulation. Normally, tumour suppressor genes prevent this abnormal growth. Genetic damage is corrected by inherent repair genes. Cancer sets in when these genes are either damaged or dysfunctional.
Genes may be defective from birth. If this is balanced by a normal gene, the person may not get cancer. In others, the abnormal gene may cause cells to grow at a certain age. The cancer then manifests itself. Many members of a family may carry the gene and eventually develop cancer. If the defect is in a particular gene they will all have the same type of cancer, such as breast cancer. If it is in the tumour suppressor gene or repair genes, the affected members will have different kinds of cancer. Not all people who have a defective gene will develop cancer. The environment and lifestyle also play a part in it.
Genetic mutations may occur as a result of chronic inflammation or viral infections (Human Papilloma Virus, Hepatitis B virus, Epstein-Barr virus.). It can occur as a result of imbalanced hormones, excessive exposure to ultraviolet light or prolonged contact with or intake of cancer causing chemicals.
Although cancer can occur at any age, the risk increases with age and the incidence rises sharply after 65. Other risk factors are unhealthy habits such as tobacco (chewing, snuff, smoking) use, being exposed to second-hand cigarette smoke and having more than two drinks a day (in men; one in women). Consumption of food additives such as sodium monoglutamate, preservatives and some food colours is dangerous. Exposure to chemicals like benzene or working with asbestos are risk factors.
Cancer is diagnosed by a comprehensive physical examination, followed by appropriate blood tests, X-rays, scans and biopsies of suspicious lesions. There is no universal test for cancer.
Accurate and early diagnosis usually results in successful treatment. The tumour may be surgically removed. This may be followed by radiation and chemotherapy. Pain, infection and other complications may require adjuvant palliative care. Some cancers require stem cell treatment. In others, biological therapy is used whereby the body is taught to recognise and attack cancer cells.
Alternative medicine has not been proven to have an effective cure for cancer. But yoga, hypnosis, acupuncture, acupressure or massage can help the patient cope with it.
Dr Gita Mathai is a paediatrician with a family practice at Vellore. Questions on health issues may be emailed to her at yourhealthgm@yahoo.co.in
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