Granuloma annularehttps://en.wikipedia.org/wiki/Granuloma_annulare
Granuloma annulare is a chronic skin condition which presents as reddish bumps on the skin arranged in a circle or ring. It can initially occur at any age, though two-thirds of patients are under 30 years old, and it is seen most often in children and young adults.

Because granuloma annulare is usually asymptomatic initial treatment is generally topical steroids. If unimproved with topical treatments, it may be treated with intradermal injections of steroids.

○ Treatment
It may improve with 3 to 5 intralesional steroid injections at 1-month intervals.
#Triamcinolone intralesional injection
  • Perforating form of Granuloma annulare ― One of the common areas is the dorsal side of the hand. It usually appears as asymptomatic papules.
  • Tinea corporis and erythema annulare centrifugum can be considered as differential diagnoses.
  • It is characterized by a hard, annular-shaped lesion. There are no symptoms such as itching or pain.
References Granuloma Annulare 29083715 
NIH
Granuloma annulare is a cutaneous granulomatous disease that is not caused by an infection. It is the most common non-infectious granulomatous disease. The disease is benign and often self-limited. Granuloma annulare usually presents as erythematous plaques or papules arranged in an annular configuration on the upper extremities. In addition to the more common presentation, termed localized granuloma annulare, other clinical variants of granuloma annulare include generalized, perforating, patch, and subcutaneous. Despite being a benign disease, it can be associated with more serious conditions such as HIV or malignancy.
 Granuloma Annulare: An Updated Review of Epidemiology, Pathogenesis, and Treatment Options 34495491 
NIH
Granuloma annulare (GA) is an inflammatory granulomatous skin disease that can be localized (localized GA) or disseminated (generalized GA), with patch, perforating, and subcutaneous subtypes being less common variants of this benign condition.