- Molting: When hermit crabs molt, they shed their old exoskeleton to make way for a new, larger one. During this process, they may develop a white bump on their shell, which is actually the new exoskeleton forming underneath the old one. Once the molt is complete, the white bump will disappear.
- Injury: A white bump could also be a sign of an injury, such as a cut or scrape. If the injury is severe, the hermit crab may need to be taken to a veterinarian for treatment.
- Disease: In some cases, a white bump could be a sign of a disease, such as a bacterial or fungal infection. If you think your hermit crab may be sick, it's important to take it to a veterinarian as soon as possible.
- Parasites: A white bump could also be a sign of parasites. If you think your hermit crab may have parasites, you should take it to a veterinarian for treatment.
If you're not sure what's causing the white bump on your hermit crab's shell, it's best to take it to a veterinarian for diagnosis and treatment.