Basically classified by causative mechanism, types of congenital hemolytic anemia include:

Common features shared by lunar rilles and similar structures on other bodies suggest that common causative mechanisms operate widely in the solar system.

Repeated anomalies, however, suggest underlying causative mechanisms that can be analyzed.

However, the causative mechanism remains uncertain.

Currently the causative mechanism is unknown.

However, prominent modern thought attributes other causative mechanisms to autism and autistic spectrum disorders.

The causative mechanisms are poorly understood but involve complex neurological and vascular factors.

There are two problems with these claims: there is no known causative mechanism that goes from low-intensity, low-frequency electromagnetic radiation to sickness.

Another common mistake is to assume a causal input/output relation between observed variables, when in fact the causative mechanism is not in the system model.

The causative mechanism in the kidneys is unknown.