A child gets separated from their parents in a large crowd and gets lost. A child sticks their head between the bars of a fence and then cannot get back out. A child crawls into a hole and gets stuck, or cannot find their way back. A child is left in their parents car, truck, or van. A child is in a crowded area with no windows (a classroom, basement, etc.) and has run-ins with other people, or is put there as a means of punishment.The term past experiences, according to one author, can extend to the moment of birth. In John A. Speyrers "Claustrophobia and the Fear of Death and Dying", the reader is brought to the conclusion that claustrophobias high frequency is due to birth trauma, about which he says is "one of the most horrendous experiences we can have during our lifetime", and it is in this helpless moment that the infant develops claustrophobia. Magnetic resonance imaging (MRI) can trigger claustrophobia. An MRI scan entails lying still for some time in a narrow tube. In a study involving claustrophobia and MRI, it was reported that 13% of patients experienced a panic attack during the procedure. The procedure has been linked not only to the triggering of preexisting claustrophobia, but also to the onset of the condition in some people. Panic attacks experienced during the procedure can stop the person from adjusting to the situation, thereby perpetuating the fear. S.J. Rachman tells of an extreme example, citing the experience of 21 miners.
Hidrocystoma (also known as cystadenoma, a Molls gland cyst, and a sudoriferous cyst) is an adenoma of the sweat glands. : 787 Hidrocystomas are cysts of sweat ducts, usually on the eyelids. : 664  They are not tumours (a similar-sounding lesion called hidroadenoma is a benign tumour). The three types of "sweat" glands are: True sweat glands or eccrine glands, sebaceous glands, which have an oily secretion around hair follicles, and apocrine glands, which have more oily product than eccrine glands and are found on the face, armpit, and groin. Hidrocystomas usually arise from apocrine glands. They are also called cysts of Moll or sudoriferous cysts. A type of hidroadenoma that arises from eccrine glands is uncommon. Other related conditions on the eyelids include chalazion (a granulomatous reaction to sebaceous glands on the eyelid), lacrimal duct cysts (cysts related to tear ducts), and nasolacrimal duct cysts (the nasolacrimal duct drains tears into the nose via a punctum on the lower eyelid). Additional images
See also
Syringoma
Acrospiroma
Seborrheic keratosis
List of cutaneous conditions
List of cutaneous neoplasms associated with systemic syndromes

References


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