Clinical images are part of the medical record. Especially when they are being used to make clinical judgments, they should be retained, which means discussing transfer, storage and use of images.
Transfer – not subject to information governance and data protection rules until received! Whatsapp automatically uses end to end encryption.
Storage – needs to be deleted from your phone/device. NB Whatsapp has option to automatically save to phone. Arrange storage with NHS approved service, or else ask family to retain.
Use – needs specific consent to reproduce in any form, for specified purpose.
Document verbal consent.
If patients are unsure of sharing images, you could try sending illustrative images of the suspected condition.