# Taeniasis (Tapeworm) - Category: acute - Review status: reviewed (every claim checked against a document named on this page) - Sources: Egyptian National Drug Formulary - antimicrobial-2023.pdf, Niclosamide monograph (chapter PDF p35) · Lesh EJ, Brady MF. Tapeworm. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. Last update August 28, 2023. - Verified date: 2026-08 ## Verified against - Egyptian National Drug Formulary - antimicrobial-2023.pdf, Niclosamide monograph (chapter PDF p35) - Lesh EJ, Brady MF. Tapeworm. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. Last update August 28, 2023. ## Treatment metadata - Niclosamide — oral.solid ## Complete treatment card ```text TAENIASIS (TAPEWORM) Sources: Egyptian National Drug Formulary - antimicrobial-2023.pdf, Niclosamide monograph (chapter PDF p35) · Lesh EJ, Brady MF. Tapeworm. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. Last update August 28, 2023. Review status: REVIEWED against 2 sources listed above (2026-08) IS IT THIS? - reference only, to read alongside your own examination SYMPTOMS - what the patient reports (12) - Adult tapeworm infection is usually silent or causes only mild trouble - The typical picture is itching around the anus from escaping worm segments, plus mild belly pain [abdominal pain · itching] - Most people first realise when they notice worm segments passed in the stool - Rarely a segment is brought back up or inhaled - Other complaints are nausea, appetite change in either direction, weakness and weight loss [nausea · weight loss] - Less often headache, constipation, dizziness or diarrhoea [constipation · diarrhoea · dizziness · headache] - Children tend to have more symptoms than adults do - The fish tapeworm reaches 2 to 15 m yet still causes mild illness or none at all - One in five with the fish tapeworm get diarrhoea, belly pain, tiredness, constipation or pernicious anaemia [abdominal pain · anaemia · constipation · diarrhoea · fatigue] - Bloating, a sore tongue, sore gums and a change in appetite are also reported [abdominal distension] - Brain cysts can imitate almost any neurological illness [cyst] - Reported features are fits, focal weakness, raised pressure in the head, decline in thinking, headache and abnormal movements [headache · seizures] SIGNS - what you find (8) - Worm segments may be seen in the stool or brought back up - Cysts survive only where the immune system cannot reach, chiefly the brain and the eye [cyst] - Cysts sit most often in muscle, under the skin, in the eye and in the brain, but only brain cysts carry real morbidity [cyst] - Where the brain cysts sit sets the picture: inside brain tissue means fits and headache, in the fluid spaces means hydrocephalus [cyst · headache · seizures] - Rare complications are blockage of bowel, bile duct or pancreatic duct needing surgery - The fish tapeworm can likewise obstruct the bowel or inflame the gallbladder - A heavy or long-standing fish tapeworm can cause megaloblastic anaemia, taking up to 80% of gut B12 [anaemia] - About 40% have a low B12 but only 2% become anaemic [anaemia] TESTS (12) - Diagnosis rests mainly on stool microscopy looking for eggs - Microscopy identifies the genus but frequently not the species - Molecular testing on stool or serum can name the species - Eosinophils are often up but only modestly, a rise of 1% to 15%, and IgE may be raised too - Beef and pork tapeworm eggs look identical; counting uterine branches on a passed segment separates them - Beef tapeworm segments crawl out on their own, so an anal swab may recover eggs better than stool - Egg shedding is intermittent, so microscopy misses a lot, with sensitivity from 3.9% to 52.5% - Stool antigen testing does not depend on eggs being shed and reaches 98% sensitivity against 38% for microscopy - Stool antigen can cross-react with roundworm, whipworm, dwarf tapeworm and protozoa - Brain cysts need molecular tests and imaging together - Imaging can stage how far a cyst has degenerated and how inflamed it is, and tracks response to treatment - A positive antibody does not prove live infection, since past exposure alone turns it positive IF NOT THIS - what else fits (10) - In an endemic area, belly pain, diarrhoea or constipation earns a stool microscopy - A negative stool does not clear tapeworm from the differential, because sensitivity is poor - Keep bacterial diarrhoea, viral illness and chronic inflammatory bowel disease in view - Suspicion rests on where the patient has travelled or been exposed - Parasite eggs of different species look alike and have been misidentified - Telling the two Taenia apart matters: pork tapeworm can seed the brain, beef tapeworm cannot - Multiple ring-enhancing brain lesions also arise from abscess, tuberculosis and syphilis - So do fungal infection, toxoplasmosis, hydatid disease, secondary cancer and CNS lymphoma - Multiple sclerosis and sarcoidosis round out the ring-enhancing lesion differential - Repeat testing or empirical treatment may be needed Source StatPearls "Tapeworm" - disease-level clinical article Status traced to the source above 1. NICLOSAMIDE [1st line] Adult 2 g as a single dose - Single dose Peds Under 2 years: 500 mg as a single dose 2 to 6 years: 1 g as a single dose Over 6 years: 2 g as a single dose (Weight/age-banded single dose: under 2 years 500 mg; 2-6 years 1 g; over 6 years and adolescents 2 g, as a single dose.) Source Egyptian National Drug Formulary - antimicrobial-2023.pdf, Niclosamide monograph (chapter PDF p35) Why Formulary explicitly names Taenia saginata (beef tapeworm) and gives a single-dose adult regimen - the direct, guideline-backed first choice for this condition. Caution Tablets should be chewed thoroughly and taken after a light meal. If Taenia solium (pork tapeworm) is suspected rather than T. saginata, be alert for neurological symptoms suggesting neurocysticercosis, which needs urgent referral rather than routine treatment. Refer urgently for signs of intestinal obstruction or unexplained weight loss. Generally well tolerated; mild GI upset is the main side effect. Patients may report the passage of visible worm segments. Egypt YOMESAN 500 MG 4 CHEWABLE TABS. ALEXANDRIA 5.50 EGP NICLOSAN 500 MG 20 CHEWABLE TABS. MISR 40.00 EGP Prices are indicative (dataset snapshot 2026-06); verify with the pharmacy. ``` --- Dawaa Reference is a reference for prescribers, not a medical device, and does not replace clinical judgement. [Privacy policy](/privacy)