ABSTRACT

Observation:

Pityriasis rubra pilaris (PRP) is characterized by redness of the skin, and scaling with a variable degree of pruritus. It may rarely coexist with various neuromuscular diseases. There are many reports of multiple diseases such as pemphigus, vitiligo, alopecia areata, systemic lupus erythematosus, lichen planus, Sjögren’s syndrome, ulcerative colitis, Hashimoto’s thyroiditis, rheumatoid arthritis, lymphoma, and thymoma associated with myasthenia gravis (MG). We describe a patient with MG associated with PRP.