Erectile Dysfunction

Introduction Erectile dysfunction is the inability to achieve or maintain an erection sufficient for satisfactory sexual performance. It affects up to 50% of men between 40 and 70. Erection requires an intact parasympathetic reflex...

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Erythema Multiforme

Introduction Erythema multiforme is a hypersensitivity reaction, causing a character in skin rash. It is typically the result of an infection – usually from herpes simplex virus, and sometimes from mycoplasma pneumoniae. It usually...

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