Sickness Certificate Format
Prepare a clear sickness certificate format that explains illness and the exact advised rest period for absence records.
Sickness Certificate
This is to certify that I, ________________ (Registration No. __________), examined ________________ on __________.
He/She was found to be suffering from ________________ and was advised rest from __________ to __________.
He/She was medically unable to attend school, college, or work during the advised rest period.
What a sickness certificate must establish
The absence period must be explicit
A sickness certificate is useful only when it connects the illness to a specific absence period. Offices compare the "rest from" and "rest to" dates against attendance or duty records; a certificate without dates is often treated as incomplete.
The diagnosis line should be specific enough for administrative review without exposing unnecessary sensitive detail. For routine school and college absence, the certificate normally states the nature of illness and the rest period rather than the full prescription.
Why the registration number matters
Institutions need to know that the certificate came from a registered doctor, not an informal note. The medical council registration number and clinic seal give the receiving office a verifiable issuer, which is why the format makes those fields prominent.
Format source
Standard sickness-certificate structure used for institutional absence records: patient identity, illness/diagnosis, examination date, advised rest-from and rest-to dates, doctor registration number, signature and seal. CBSE attendance-shortage guidance also lists medical certificates for the period of absence among documents for prolonged illness cases.
Frequently asked questions
What is the difference between a sickness certificate and a medical fitness certificate?
A sickness certificate explains that the patient was ill and needed rest for a defined period. A medical fitness certificate confirms the person is fit to resume from a later date. Many institutions ask for both after longer illness.
Can a sickness certificate cover past absence?
It can cover the period examined and advised by the doctor. Institutions may reject certificates created long after the absence if the doctor did not examine the patient during the illness period.
Does the certificate need the exact diagnosis?
It should state the nature of illness in a reasonable way, such as viral fever or acute gastroenteritis. The institution usually needs enough detail to understand the absence, not a complete medical history.
Who signs a sickness certificate?
A Registered Medical Practitioner signs it, with registration number and seal. A parent, school office, or student cannot self-issue a valid medical certificate.
Why are rest dates mandatory?
Because attendance and payroll records are date-based. The certificate must say exactly which dates the patient was medically advised not to attend.
Related certificate formats & school documents
For developers & AI agents
The Sickness Certificate Generator is also available as a free, unauthenticated JSON API — no API key, no sign-up, CORS enabled for all origins. Send a GET request with the parameters below and receive the computed result as JSON, including the source of the format or formula used. Invalid input returns HTTP 400 with a JSON { "error": "..." } body.
GET https://knwdle.com/api/tools/sickness-certificate-generator| Parameter | Required | Description |
|---|---|---|
institutionName | Yes | Name printed on the letterhead |
institutionAddress | No | Address line under the letterhead |
doctorName | Yes | Certifying doctor's name and qualification |
registrationNo | Yes | Doctor's medical council registration number |
patientName | Yes | Patient's full name |
age | No | Patient's age (optional) |
examinedOn | Yes | Date of medical examination (YYYY-MM-DD) |
illness | Yes | Diagnosis or nature of illness |
restFrom | Yes | Start date of advised rest (YYYY-MM-DD) |
restTo | Yes | End date of advised rest (YYYY-MM-DD) |
remarks | No | Optional treatment or follow-up note |
date | Yes | Issue date (YYYY-MM-DD) |
place | Yes | Place of issue |
signatory | No | Signature line text |
Request:
GET https://knwdle.com/api/tools/sickness-certificate-generator?institutionName=City+Care+Clinic&doctorName=Dr.+Meera+Joshi%2C+MBBS®istrationNo=MMC%2F2010%2F12345&patientName=Aarav+Shah&age=15&examinedOn=2026-08-01&illness=acute+gastroenteritis&restFrom=2026-08-01&restTo=2026-08-04&remarks=treatment+prescribed%3B+review+advised+if+symptoms+persist&date=2026-08-01&place=Pune
Response:
{
"tool": "sickness-certificate-generator",
"name": "Sickness Certificate Generator",
"formatSource": "Standard sickness-certificate structure used for institutional absence records: patient identity, illness/diagnosis, examination date, advised rest-from and rest-to dates, doctor registration number, signature and seal. CBSE attendance-shortage guidance also lists medical certificates for the period of absence among documents for prolonged illness cases.",
"document": {
"title": "Sickness Certificate",
"subject": null,
"textLines": [
"SICKNESS CERTIFICATE",
"",
"This is to certify that I, Dr. Meera Joshi, MBBS (Registration No. MMC/2010/12345), examined Aarav Shah, aged 15 years, on 01/08/2026.",
"",
"He/She was found to be suffering from acute gastroenteritis and was advised rest from 01/08/2026 to 04/08/2026.",
"",
"treatment prescribed; review advised if symptoms persist. He/She was medically unable to attend school, college, or work during the advised rest period."
],
"text": "SICKNESS CERTIFICATE\n\nThis is to certify that I, Dr. Meera Joshi, MBBS (Registration No. MMC/2010/12345), examined Aarav Shah, aged 15 years, on 01/08/2026.\n\nHe/She was found to be suffering from acute gastroenteritis and was advised rest from 01/08/2026 to 04/08/2026.\n\ntreatment prescribed; review advised if symptoms persist. He/She was medically unable to attend school, college, or work during the advised rest period."
}
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