There are over 200 types of jellyfish. Some are not poisonous, however, some are very poisonous and may lead to coma or death. Symptoms of a jellyfish sting include stinging pain, rash, itching, and raised welts.
More serious symptoms include nausea, vomiting, abdominal pain, diarrhea, or muscle spasms. Treatment depends on the type of jellyfish. Some may require immediate hospitalization.
A rash is a visible skin outbreak. Examples of noninfectious rashes include eczema, psoriasis, contact dermatitis, seborrheic dermatitis, rosacea, hives, and allergic dermatitis. Types of infectious rashes include ringworm, impetigo, scabies, herpes, chickenpox, and shingles. Rashes may be caused by fungi, viruses, bacteria, and parasites. Treatment depends upon the type of rash.