A nosode, by definition describes a homeopathic preparation made from a pathologic excretion. An auto-nosode is a remedy made from such material that is derived from the particular patient him- or her-self, who is to be treated with the auto-nosode . The auto-nosode is therefore an isopathic substance .
The idea of treating patients with isopathic substances is not new; it is first mentioned in the writings of Hippocrates. Yet in homeopathically potentised form it was Wilhelm Lux, a homeopathic vet who first employed this concept in 1820 . The underlying idea uses the ‘aequale’ (the same) as opposed to the ‘simile’ (the similar) of the homeopathic principle of ‘like cures like’, to treat a disease.
Constantin Hering started using homeopathic nosodes, in application of the simile-rule in 1831 . First mention of the nosodes in Hahnemanns Organon is in the 4th edition, § 56 .
In 1895 a Parisian Dr. named Collet first mentions the use of homeopathic preparations derived from the tears, urine, sweat, and blood of sick patients for their treatment . Auto-nosodes can also be made from sputum, pus, leucorrhoea, secretions from skin affections, and cultures of microbes or virus of a patient . Dr. Collet potentised these auto-nosodes the Korsakovian way (explanation of Korsakov-remedies can be found here: https://talkndiscuss.wordpress.com/2015/07/05/korsakov-remedies-a-stand-alone-approach/), using the 1C & 6C in acute cases, and the 6C, 15C and 30C in chronic diseases .
Hedwig Imhäuser has used the blood nosode in her treatment of various illnesses in childhood. She describes the production of potentised blood as follows :
The process of producing a blood-nosodes requires some 10ml bottles and alcohol of 25-30% strength. Each bottle is filled with 100 drops of the alcohol. One drop of patient blood is added to the first bottle, is then vigorously shaken, and one drop from this bottle is added to the second bottle which is then in turn succussed. This process continues with more bottles up to the desired potency.
Imhäuser  uses the blood nosode in 5C or 7C potency in acute infections where the similimum is difficult to derive or shows no effect, where a child is severely weakened, or complications have arisen.
In acute high fever Imhäuser suggests administering 2 to 3 drops of 5C of the auto-blood-nosode once daily, followed by one dose of 7C every 2 to 3 days. This is to be done until the fever has subsided. In recurrent infections, Imhäuser gives the 7C once every 8 days for 6 repetitions. Following the same pattern she then continues with the 9C, 10C and 12C. As such the patients will not have recurrence of the infection for up to a year, she explains .
Auto-nosodes may be viewed somewhat controversially in that they cannot be ‘derived’ following an individualized case-appraisal, and are commonly chosen on account of their patient origin. They are however, another tool in the hands of capable homeopaths, and may have healing potential that has not yet extensively been investigated.
 Julian, O. (1960) Materia medica der Nosoden, 3 edn., Heidelberg: Haug Verlag.
 Imhäuser, H. (1970) Homöopathie in der Kinderheilkunde, 3 edn., Heidelberg: Haug Verlag.
 Master, F.J. (2010) Isodes, Nosodes and Sarcodes in Homoeopathy,Available at: http://www.drfarokhmaster.com/Editorial/2010-2011%20Editorial%20%20Feb%202010.pdf (Accessed: February 2016).