Delayed telogen release involves a prolonged telogen phase followed by a delayed transition to anagen. This occurs in animals with synchronous hair cycles that shed their hair or winter coats seasonally. This is also sometimes responsible for seasonal hair loss in humans.Emotional or physiological stress may result in an alteration of the normal hair cycle and cause the disorder, with potential causes including eating disorders, crash diets, pregnancy and childbirth, chronic illness, major surgery, anemia, severe emotional disorders, hypothyroidism, and drugs.Diagnostic tests, which may be performed to verify the diagnosis, include a trichogram, trichoscopy and biopsy. Effluvium can present with similar appearance to alopecia totalis, with further distinction by clinical course, microscopic examination of plucked follicles, or biopsy of the scalp. Histology would show telogen hair follicles in the dermis with minimal inflammation in effluvium, and dense peribulbar lymphocytic infiltrate in alopecia totalis.Vitamin D levels may also play a role in the normal hair cycle.Many new cosmetic treatments have been reported, including stemoxydine, Nioxin, minoxidil, and a leave-on technology combination: caffeine, niacinamide, panthenol, dimethicone, and an acrylate polymer (CNPDA). This treatment has shown to increase the diameter of existing, individual scalp hair fibres by 2–5 μm, yielding a significant increase of approximately 10% in the cross-sectional area of each hair. Additionally, CNPDA-thickened hairs also demonstrate altered mechanical properties of thicker fibres; increased suppleness/pliability, and increased ability to withstand force without breaking. See also
Anagen effluvium
Noncicatricial alopecia

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A distichia is an eyelash that arises from an abnormal part of the eyelid. This abnormality, attributed to a genetic mutation, is known to affect dogs and humans. Distichiae usually exit from the duct of the meibomian gland at the eyelid margin. They are usually multiple, and sometimes more than one arises from a duct. They can affect either the upper or lower eyelid and are usually bilateral. The lower eyelids of dogs usually have no eyelashes.Distichiae usually cause no symptoms, because the lashes are soft, but they can irritate the eye and cause tearing, squinting, inflammation, corneal ulcers and scarring. Treatment options include manual removal, electrolysis, electrocautery, CO2 laser ablation, cryotherapy, and surgery. Commonly affected breeds
In veterinary medicine, some canine breeds are affected by distichiasis more frequently than others:

Cocker Spaniel
Dachshund (especially the miniature longhaired Dachshund)
Bulldog
Pekingese
Yorkshire Terrier
Flat-Coated Retriever
Shetland Sheepdog
Boxer
Poodle

Ectopic cilia
An ectopic cilia is a special type of distichia usually found in younger dogs. Commonly affected breeds include Poodles, Golden Retrievers, and Shih Tzus. The eyelash exits through the conjunctiva of the eyelid facing toward the eye, usually at the middle of the upper eyelid. It can cause intense pain and corneal ulcers. Treatment is surgery or cryotherapy. See also
Trichiasis
Lymphedema distichiasis

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