Identification of Patients with Scabies – PST04102 Disease Control and Prevention
NTA Level 4 • Semester 1 • PST04102 Identification of Patients with Scabies Disease Control and Prevention • Source Session/Topic 25 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 25: Identification of Patients with Scabies Total Session Time: 120 minutes + 2 hours Assignment Prerequisites • None Learning Tasks By the end of this session students are expected to be able to: • Describe Cause(s) of Scabies • Describe Mode of Transmission of Scabies • Describe Major Signs and Symptoms of Scabies • Explain Treatment of Scabies • Explain Prevention and Control of Scabies Resources Needed • Flip charts, marker pens, and masking tape • Black/white board, chalk and whiteboard markers • Computer and LCD Projector SESSION OVERVIEW |Step |Time |Activity/ |Content | | | |Method | | |1 |5 minutes |Presentation |Introduction, Learning Tasks | |2 |10 minutes |Presentation |Cause(s) of Scabies | | | |Buzzing | | |3 |10 minutes |Presentation |Mode of Transmission of Scabies | |4 |30 minutes |Presentation |Major Signs and Symptoms of Scabies | | | |Brainstorming | | |5 |20 minutes |Presentation |Treatment of Scabies | |6 |30 minutes |Presentation |Prevention and Control of Scabies | | | |Small group | | | | |discussion | | |7 |5 minutes |Presentation |Key Points | |8 |5 minutes |Presentation |Evaluation | |9 |5 minutes |Presentation |Assignment | SESSION CONTENTS STEP1: Presentation of Session Titles and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify ASK students if they have any questions before continuing STEP 2: Causes of Scabies(10 minutes) |Activity: Buzzing (10 minutes) | | | |ASK students to pair up and buzz on the following question for 2 | |minutes | | | |What causes scabies? | | | |ALLOW few pairs to respond and let other pairs to add on points not | |mentioned | | | |WRITE their response on the flip chart/board | | | |CLARIFY and SUMMARIZE by using the content below | • Scabies: A parasitic infection of the skin characterised by an intense itching with typical distribution caused by the mite Sarcoptes scabies • Prevalence is high in areas with shortage of water • Common in people who do not take bath regularly • Low socio-economic conditions favour the spread of the disease STEP 3: Mode of Transmission of Scabies (10 minutes) • Transmission is by direct close body contact from infected person and indirectly through bed clothes and sharing clothing • The female mite enters the skin and makes a small tunnel or burrow • The burrow is always superficial • The skin selected for burrow is always thin and wrinkled giving scabies rash a typical distribution • In the burrows, eggs and faeces are produced • The eggs hatch in 4-5 days • The larvae leave the parent tunnel and bury in the skin in other places, but do not make tunnels STEP 4: Signs and Symptoms of Scabies (30 minutes) |Activity: Brainstorming (10 minutes) | | | |Ask students to brainstorm on the following question: | | | |What are the signs and symptoms of scabies? | | | |ALLOW few students to respond | | | |WRITE their responses on the flip chart/ board | | | |CLARIFY and SUMMARISE by using the content below | • Intensive itching, especially at night • Eczema-like signs o The itching leading to scratching o Secondary bacterial infection • In case of immune suppression such as HIV and AIDS, infestation can be extensive • Typical distribution of severe itch and rash are: o Anterior axillary fold o Nipples, lower abdomen in women o Belt line (umbilicus) o Front side of wrist and elbows o External genitalia o Thighs and buttocks o Sides of fingers and toes o Sides and webs of fingers o Scalp and feet (infants under 1 year) • Patients with leprosy or other diseases which interfere with normal sensation may not feel the itching caused by scabies. In these cases, scabies can be very extensive and thick crusts can form [pic] STEP 5: Treatment of Scabies (30 minutes) • The drug of choice is 10% Benzyl benzoate emulsion (BBE) • Administration information o After the patient has taken a warm bath, the drug is applied over the whole body except the face o After 24 hours of first treatment, the patient should bath again and put on clean clothes o The drug has no effect on the eggs, therefore repeat BBE after 4 – 7 days to kill larvae which have hatched after the first treatment • Other drugs which can be used in the absence of BBE include: o Tetmosol solution or soap o Permethrin cream 5% (applied to areas of the body from neck downward and washed off after 8-14 hours) o Ivermectin 200µg/kg orally and repeated after 2 weeks or Lindane (1%) lotion or cream o Antibiotics are used only when there is a secondary infection (preferably Penicillin) STEP 6: Prevention and Control of Scabies (30 minutes) |Activity: Small Group Discussion ( 15 minutes) | | | |DIVIDE students into small manageable groups | | | |ASK students to discuss on the following question | |What are the measures of preventing scabies? | | | |ALLOW students to discuss for 10 minutes | | | |ALLOW few groups to present and the rest to add points not mentioned | | | |CLARIFY and SUMMARIZE by using the contents below | Prevention and control of scabies • Regular bathing with soap • Washing clothes regularly • Give health education to stress the use of soap and personal hygiene • Treat the whole family • Decontamination of bedding materials and clothing • Improve water supply STEP 7: Key Points (5 minutes) • Scabies is characterized by severe itching • It is treated with BBE, Tetmosol, Ivermectin or Lindane. • Treatment of scabies should include all