WORM
INFESTATION
Mr. Pradeep Abothu, M.Sc (N),
PhD Scholar, Associate Professor
Dept. Of Child Health Nursing
ASRAM College Of Nursing
DEFINITION
Worm infestation refers to presence of worms in child’s body, specifically in
intestines and sometimes in other parts of the body.
The child gets infested by worms through drinking or eating of contaminated food,
water or mud (PICA).
The common worm infestations are Threadworm, Round Worm & Hookworm.
ROUND WORMS (ASCARIS):
They are round, thin, white/pink in color and are about 10-20 inches long
HOOK WORMS (ANKYLOSTOMES)
They are tiny, 5–15 mm in length, pink in colour, not visible in stools.
THREAD WORMS(ENTEROBIUS):
Thread worms are also known as pin worms, They are white, small, thin, just
like fine threads and measures about 2–13 mm in length and up to 0.5 mm
wide.
CLINICAL MANIFESTATIONS:
Most often, the signs and symptoms are mild and not noticed unless the worm load is
heavy. The symptoms include
Loss of appetite, nausea and poor digestion.
Abdominal discomfort/pain after eating food
Abdominal distension and vomiting.
Anemia and weakness.
Perineal itching(causing disturbed sleep).
Sometimes a worm load may cause intestinal obstruction,
Worms in the stool, coughing up worms.
Unexplained coughing, wheezing or shortness of breath in a non-asthmatic child.
DIAGNOSTIC EVALUATION:
Stool microscopy is done to find ova or larvae in the stools.
To measure a child's worm load, all the ova in a fecal smear are counted.
Less than 20 ova in a standard fecal smear is a light worm load, between 20
to 40 ova is a moderate load and more than 40 ova is heavy load.
MANAGEMENT:
DRUG THERAPY: There are about 25 antihelminthic drugs available in the
market. Commonly used drugs are:
Mebendazole
Pyrantel palmoate
Piperazine salts
Niclosamide
MEBONDAZOLE: This drug has a broad spectrum of action and virtually no side effects. It is
wormicidal. It inhibits glucose uptake by the worm, immobilizes the worms and kills it.
Mebondazole is the drug of choice for roundworms, hookworms and threadworms.
It is available as 100 mg tablet and syrup. The dose is same for adults and children.
For threadworms single 100 mg tablet of Mebendazole is effective.
For roundworms and hookworms, 100 mg is to be given for 3 days.
When there is massive worm infection and expulsion, transient abdominal pain and
Diarrhea can occur.
Worm migration through nose and mouth during Mebendazole treatment is a known side
effect which occurs due to starvation and slow death of worm.
Very rarely leucopenia has been reported.
PYRANTEL PALMOATE: it is a broad spectrum antihelmintic drug with efficacy similar
to Mebendazole. It causes sharp contraction of the worm with subsequent cessation of
spontaneous activity and paralysis of worms.
Pyrantel is effective in the treatment of round worms and thread worms with a
single dose of 10 mg/kg body weight.
Against hookworms, same d