Diphtheria (Corynebacterium diphtheriae): History, Symptoms, Causes, Treatment

Corynebacteria are Gram-positive, aerobic, nonmotile, rod-shaped bacteria related to the Actinomycetes. They do not form spores or branch as do the actinomycetes, but they have the characteristic of forming irregular shaped, club-shaped or V-shaped arrangements in normal growth. They undergo snapping movements just after cell division which brings them into characteristic arrangements resembling Chinese letters.…

Obsessive-Compulsive Disorder: Causes & Treatment

“Compulsive” and “obsessive” have become everyday words. “I’m compulsive” is how some people describe their need for neatness, punctuality, and shoes lined up in the closets. “He’s so compulsive is shorthand for calling someone uptight, controlling, and not much fun. “She’s obsessed with him” is a way of saying your friend is hopelessly lovesick. That…

Narcissism: Psychological Disorder, Theories, Treatment

Understanding the Narcissistic Phenomenon The so called ‘narcissistic personality disorder’ is a complex and often misunderstood disorder. The cardinal feature of the narcissistic personality is the grandiose sense of self importance, but paradoxically underneath this grandiosity the narcissist suffers from a chronically fragile low self esteem. The grandiosity of the narcissist, however, is often so…