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seasonal affective disorder

(sēz′ŏn-ăl) ABBR: SAD. A mood disorder characterized by dysphoria or depression in fall and winter, and, sometimes, relative mania or hypomania in the spring and summer. The disorder is more common in women than men, and in younger persons than older ones. SYN: winter depression.

PATIENT CARE: Treatment consists of phototherapy, esp. during the mornings of the shorter days of the year. Other therapies include antidepressant medications, e.g., bupropion, and psychiatric or psychological counseling, e.g., cognitive behavioral therapy. To increase exposure to natural light, health care professionals should encourage patients to engage in outdoor daytime activities during fall and winter.


(sēt) A structure on which another structure rests or is supported.

basal s. Tissues in the mouth that support a denture.

bathtub s. 1. An assistive technology device that helps people with functional limitations to bathe. Some seats have modified features to help people transfer in and out of tubs, pools, or showers. SYN: bath bench; shower s. 2. A device for bathing infants.

image Infant drownings have occurred during bathtub seat use.

elevated toilet s. Raised toilet s.

raised toilet s. A device for raising the height of a toilet to facilitate use by persons with limited strength or movement. SYN: elevated toilet s.

rest s. An area on which a denture or restoration rests.

shower s. Bathtub s. (1).

Seating and Mobility Specialist

ABBR: SMS. An occupational therapist with specialty certification in providing assistive technology and advice for those needing seating, positioning, or wheeled mobility devices.

seating system

Adaptive seating device.

sea wasp

A common but ambiguous term for several extremely lethal box jellyfish of the class Cubozoa, including Chironex fleckeri, of the coastal waters from northern Australia and New Guinea north to the Philippines and Vietnam, and Carybdea alata Reynaud, an Australian species also found in the Arabian Sea along the beaches of Pakistan. SEE: box jellyfish; Cubozoa.


(sē-bā′shŭs) [L. sebaceus, made of tallow] Pert. to sebum.

sebaceous gland SEE: under gland.


[L. sebum, grease, tallow] Prefix meaning fat, tallow.


(sĕb-or-ē′ă) [″ + Gr. rhoia, flow] A disease of the sebaceous glands marked by an increase in the amount, and often an alteration of the quality, of the fats secreted by the sebaceous glands.

 TREATMENT: Mild dandruff, a type of seborrhea, may be treated with a shampoo containing selenium sulfide or sulfur. Severe seborrhea ...

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