They are round and small tissue masses on your body which is integral part of lymphatic system. Lymph nodes play a vital role in defense mechanism for fighting against infection. The lymph nodes produce lymphocytes which filter the harmful bacteria and other infection causing microorganisms to travel into the bloodstream. They also help in retaining the fluid balance.
Some children will not gain normal weight during development and those children are referred to failure to thrive. Their developmental rate and weight gain will be significantly lower than that of healthy children.
Scrotum is the thin bag like tissue that is found behind the penis. There will be continuous blood flow into the scrotum normally. But when the testicle rotates suddenly it would twist the spermatic cord and stops the blood-flow into the scrotum. This condition is called testicular torsion and it commonly occurs on male children aged 12-17. Testicular torsion is a life threatening problem and needs to be operated immediately. Any delay in hospitalizing or proceeding with surgery can cause permanent damage to the scrotum resulting in removal of testicles.
Tachycardia is the medical term indicating fast heartbeat. Tachyarrhythmia is a type of arrhythmia causing fast heart rate. Actually not all arrhythmias are serious. Normal heart beat for adult (at rest) is 60-100 times a minute. Anything more than 100 beats per minute is medically called tachycardia.
Dust mites are tiny bugs which are commonly found on house dust. For this reason it is also called as dust mites. It is so small in size that it cannot be seen by naked eye and only through microscope. Dust mites can cause sneezing, coughing, runny nose and hay fever. On severe cases it can cause allergic disorders like asthma and wheezing. They eat the dead skin cells shed by us and live on humid environments like furniture, bedding and carpets.